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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

The chemical and physical properties of tetravalent lanthanides: Pr, Nd, Tb, and Dy

The fundamental redox chemistry and valence electronic structure of the lanthanides in molecular complexes and extended solids continues to be a fertile area of research. The contemporary understanding of the accessible oxidation states of the lanthanide elements and the variability in their electronic structure is the result of several paradigm shifts. While the lanthanide elements have already found widespread use in technical and consumer applications, the continued reevaluation of basic redox properties is a central chemical concern to establish a more complete description of periodic properties. This fundamental understanding of valence electronic structure as it is derived from oxidation state and coordination environment is essential for the continued development of lanthanides in quantum information science and quantum materials research. This review presents the chemical and physical properties of tetravalent lanthanide ions in extended solids and molecules with a focus on the elements apart from cerium: praseodymium, neodymium, terbium, and dysprosium.

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗
DOE OSTI2024

Atomic layer molecular beam epitaxy of kagome magnet RMn6Sn6 (R = Er, Tb) thin films

Kagome lattices have garnered substantial interest because their band structure consists of topological flat bands and Dirac cones. The RMn6Sn6 (R = rare earth) compounds are particularly interesting because of the existence of the large intrinsic anomalous Hall effect (AHE), which originates from the gapped Dirac cones near the Fermi level. This makes RMn6Sn6 an outstanding candidate for realizing the high-temperature quantum AHE. The growth of RMn6Sn6 thin films is beneficial for both fundamental research and potential applications. However, most of the studies on RMn6Sn6 have focused on bulk crystals, and the synthesis of RMn6Sn6 thin films has not been reported so far. Here, we report the atomic layer molecular beam epitaxy growth, structural and magnetic characterizations, and transport properties of ErMn6Sn6 and TbMn6Sn6 thin films. It is especially noteworthy that TbMn6Sn6 thin films have out-of-plane magnetic anisotropy, which is important for realizing the quantum AHE. Our work paves the avenue toward the control of the AHE using devices patterned from RMn6Sn6 thin films.

Materials Science↗
NASA NTRS1986

A cloud model-radiative model combination for determining microwave TB-rain rate relations

The development of a cloud model-radiative transfer model combination for computing average brightness temperature, T(B), is discussed. The cloud model and radiative transfer model used in this study are described. The relations between rain rate, cloud and rain water, cloud and precipitation ice, and upwelling radiance are investigated. The effects of the rain rate relations on T(B) under different climatological conditions are examined. The model-derived T(B) results are compared to the 92 and 183 GHz aircraft observations of Hakkarinen and Adler (1984, 1986) and the radar-estimated rain rate of Hakkarinen and Adler (1986); good correlation between the data is detected.

Szejwach, Gerard↗
NASA NTRS2016

Soil Moisture Active Passive (SMAP) Project Algorithm Theoretical Basis Document SMAP L1B Radiometer Data Product: L1B_TB

The purpose of the Soil Moisture Active Passive (SMAP) radiometer calibration algorithm is to convert Level 0 (L0) radiometer digital counts data into calibrated estimates of brightness temperatures referenced to the Earth's surface within the main beam. The algorithm theory in most respects is similar to what has been developed and implemented for decades for other satellite radiometers; however, SMAP includes two key features heretofore absent from most satellite borne radiometers: radio frequency interference (RFI) detection and mitigation, and measurement of the third and fourth Stokes parameters using digital correlation. The purpose of this document is to describe the SMAP radiometer and forward model, explain the SMAP calibration algorithm, including approximations, errors, and biases, provide all necessary equations for implementing the calibration algorithm and detail the RFI detection and mitigation process. Section 2 provides a summary of algorithm objectives and driving requirements. Section 3 is a description of the instrument and Section 4 covers the forward models, upon which the algorithm is based. Section 5 gives the retrieval algorithm and theory. Section 6 describes the orbit simulator, which implements the forward model and is the key for deriving antenna pattern correction coefficients and testing the overall algorithm.

microwave radiometers↗
DOE OSTI2020

Materials Data on Tb3Ni7P5 by Materials Project

Tb3Ni7P5 crystallizes in the monoclinic Pm space group. The structure is three-dimensional. there are twelve inequivalent Tb sites. In the first Tb site, Tb is bonded in a 2-coordinate geometry to nine Ni and six P atoms. There are a spread of Tb–Ni bond distances ranging from 2.95–3.06 Å. There are two shorter (2.87 Å) and four longer (2.95 Å) Tb–P bond lengths. In the second Tb site, Tb is bonded in a 2-coordinate geometry to nine Ni and six P atoms. There are a spread of Tb–Ni bond distances ranging from 2.95–3.05 Å. There are two shorter (2.87 Å) and four longer (2.95 Å) Tb–P bond lengths. In the third Tb site, Tb is bonded in a 8-coordinate geometry to ten Ni and six P atoms. There are a spread of Tb–Ni bond distances ranging from 2.93–3.08 Å. There are a spread of Tb–P bond distances ranging from 2.89–2.95 Å. In the fourth Tb site, Tb is bonded in a 8-coordinate geometry to ten Ni and six P atoms. There are a spread of Tb–Ni bond distances ranging from 2.94–3.08 Å. There are two shorter (2.89 Å) and four longer (2.94 Å) Tb–P bond lengths. In the fifth Tb site, Tb is bonded in a 8-coordinate geometry to ten Ni and six P atoms. There are a spread of Tb–Ni bond distances ranging from 2.95–3.07 Å. There are two shorter (2.94 Å) and four longer (2.95 Å) Tb–P bond lengths. In the sixth Tb site, Tb is bonded in a 8-coordinate geometry to ten Ni and six P atoms. There are a spread of Tb–Ni bond distances ranging from 2.95–3.07 Å. There are two shorter (2.93 Å) and four longer (2.95 Å) Tb–P bond lengths. In the seventh Tb site, Tb is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Tb–Ni bond distances ranging from 2.94–3.07 Å. There are a spread of Tb–P bond distances ranging from 2.91–2.97 Å. In the eighth Tb site, Tb is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Tb–Ni bond distances ranging from 2.94–3.08 Å. There are a spread of Tb–P bond distances ranging from 2.90–2.97 Å. In the ninth Tb site, Tb is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Tb–Ni bond distances ranging from 2.94–3.07 Å. There are four shorter (2.91 Å) and two longer (2.97 Å) Tb–P bond lengths. In the tenth Tb site, Tb is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Tb–Ni bond distances ranging from 2.94–3.05 Å. There are four shorter (2.91 Å) and two longer (2.97 Å) Tb–P bond lengths. In the eleventh Tb site, Tb is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Tb–Ni bond distances ranging from 2.94–3.07 Å. There are a spread of Tb–P bond distances ranging from 2.90–2.97 Å. In the twelfth Tb site, Tb is bonded in a 10-coordinate geometry to eight Ni and six P atoms. There are a spread of Tb–Ni bond distances ranging from 2.95–3.05 Å. There are four shorter (2.91 Å) and two longer (2.97 Å) Tb–P bond lengths. There are twenty-eight inequivalent Ni sites. In the first Ni site, Ni is bonded to four Tb and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiTb4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.28–2.33 Å. In the second Ni site, Ni is bonded to four Tb and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiTb4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.28–2.33 Å. In the third Ni site, Ni is bonded to four Tb and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiTb4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.28–2.33 Å. In the fourth Ni site, Ni is bonded to four Tb and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiTb4P4 tetrahedra. There are three shorter (2.29 Å) and one longer (2.33 Å) Ni–P bond lengths. In the fifth Ni site, Ni is bonded to four Tb and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiTb4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.28–2.34 Å. In the sixth Ni site, Ni is bonded to four Tb and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiTb4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.28–2.33 Å. In the seventh Ni site, Ni is bonded to three Tb and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiTb3P4 tetrahedra. There are one shorter (2.30 Å) and three longer (2.32 Å) Ni–P bond lengths. In the eighth Ni site, Ni is bonded to three Tb and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiTb3P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.26–2.32 Å. In the ninth Ni site, Ni is bonded in a 4-coordinate geometry to three Tb and four P atoms. There are a spread of Ni–P bond distances ranging from 2.25–2.37 Å. In the tenth Ni site, Ni is bonded in a 4-coordinate geometry to three Tb and four P atoms. There are two shorter (2.25 Å) and two longer (2.38 Å) Ni–P bond lengths. In the eleventh Ni site, Ni is bonded in a 4-coordinate geometry to three Tb and four P atoms. There are a spread of Ni–P bond distances ranging from 2.25–2.33 Å. In the twelfth Ni site, Ni is bonded in a 4-coordinate geometry to three Tb and four P atoms. There are two shorter (2.25 Å) and two longer (2.35 Å) Ni–P bond lengths. In the thirteenth Ni site, Ni is bonded in a distorted trigonal planar geometry to six Tb and three P atoms. There are two shorter (2.22 Å) and one longer (2.24 Å) Ni–P bond lengths. In the fourteenth Ni site, Ni is bonded in a distorted trigonal planar geometry to six Tb and three P atoms. There are two shorter (2.22 Å) and one longer (2.24 Å) Ni–P bond lengths. In the fifteenth Ni site, Ni is bonded in a distorted trigonal planar geometry to six Tb and three P atoms. There are two shorter (2.22 Å) and one longer (2.24 Å) Ni–P bond lengths. In the sixteenth Ni site, Ni is bonded in a 3-coordinate geometry to six Tb and three P atoms. There are two shorter (2.22 Å) and one longer (2.24 Å) Ni–P bond lengths. In the seventeenth Ni site, Ni is bonded in a distorted trigonal planar geometry to six Tb and three P atoms. There are two shorter (2.22 Å) and one longer (2.24 Å) Ni–P bond lengths. In the eighteenth Ni site, Ni is bonded in a distorted trigonal planar geometry to six Tb and three P atoms. There are two shorter (2.22 Å) and one longer (2.24 Å) Ni–P bond lengths. In the nineteenth Ni site, Ni is bonded to four Tb and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiTb4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.30–2.36 Å. In the twentieth Ni site, Ni is bonded to four Tb and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiTb4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.31–2.36 Å. In the twenty-first Ni site, Ni is bonded to four Tb and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiTb4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.31–2.35 Å. In the twenty-second Ni site, Ni is bonded to four Tb and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiTb4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.30–2.34 Å. In the twenty-third Ni site, Ni is bonded to four Tb and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiTb4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.30–2.35 Å. In the twenty-fourth Ni site, Ni is bonded to four Tb and four P atoms to form a mixture of distorted edge, face, and corner-sharing NiTb4P4 tetrahedra. There are a spread of Ni–P bond distances ranging from 2.30–2.34 Å. In the twenty-fifth Ni site, Ni is bonded in a distorted trigonal non-coplanar geometry to one Tb and three P atoms. There are one shorter (2.17 Å) and two longer (2.35 Å) Ni–P bond lengths. In the twenty-sixth Ni site, Ni is bonded in a distorted trigonal non-coplanar geometry to one Tb and three P atoms. There are one shorter (2.17 Å) and two longer (2.33 Å) Ni–P bond lengths. In the twenty-seventh Ni site, Ni is bonded in a distorted trigonal non-coplanar geometry to one Tb and three P atoms. There are one shorter (2.16 Å) and two longer (2.33 Å) Ni–P bond lengths. In the twenty-eighth Ni site, Ni is bonded in a 3-coordinate geometry to one Tb and three P atoms. There are one shorter (2.17 Å) and two longer (2.30 Å) Ni–P bond lengths. There are twenty inequivalent P sites. In the first P site, P is bonded in a 3-coordinate geometry to six Tb and three Ni atoms. In the second P site, P is bonded in a 3-coordinate geometry to six Tb and three Ni atoms. In the third P site, P is bonded in a 9-coordinate geometry to four Tb and five Ni atoms. In the fourth P site, P is bonded in a 9-coordinate geometry to four Tb and five Ni atoms. In the fifth P site, P is bonded in a 9-coordinate geometry to four Tb and five Ni atoms. In the sixth P site, P is bonded in a 9-coordinate geometry to four Tb and five Ni atoms. In the seventh P site, P is bonded in a 9-coordinate geometry to four Tb and five Ni atoms. In the eighth P site, P is bonded in a 9-coordinate geometry to four Tb and five Ni atoms. In the ninth P site, P is bonded in a 6-coordinate geometry to two equivalent Tb and six Ni atoms. In the tenth P site, P is bonded in a 9-coordinate geometry to two equivalent Tb and seven Ni atoms. In the eleventh P site, P is bonded in a 6-coordinate geometry to two equivalent Tb and six Ni atoms. In the twelfth P site, P is bonded in a 9-coordinate geometry to two equivalent Tb and seven Ni atoms. In the thirteenth P site, P is bonded in a 7-coordinate geometry to two equivalent Tb and five Ni atoms. In the fourteenth P site, P is bonded in a 7-coordinate geometry to two equivalent Tb and five Ni atoms. In the fifteenth P site, P is bonded in a 9-coordinate geometry to four Tb and five Ni atoms. In the sixteenth P site, P is bonded in a 9-coordinate geometry to four Tb and five Ni atoms. In the seventeenth P site, P is bonded in a 9-coordinate geometry to four Tb and five Ni atoms. In the eighteenth P site, P is bonded in a 9-coordinate geometry to four Tb and five Ni atoms. In the nineteenth P site, P is bonded in a 9-coordinate geometry to four Tb and five Ni atoms. In the twentieth P site, P is bonded in a 9-coordinate geometry to four Tb and five Ni atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb14(P8Ir11)3 by Materials Project

Tb14(Ir11P8)3 crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are fourteen inequivalent Tb sites. In the first Tb site, Tb is bonded in a 4-coordinate geometry to nine Ir and six P atoms. There are a spread of Tb–Ir bond distances ranging from 3.13–3.40 Å. There are a spread of Tb–P bond distances ranging from 2.95–3.16 Å. In the second Tb site, Tb is bonded in a 7-coordinate geometry to nine Ir and six P atoms. There are a spread of Tb–Ir bond distances ranging from 2.98–3.35 Å. There are a spread of Tb–P bond distances ranging from 2.96–3.13 Å. In the third Tb site, Tb is bonded in a 7-coordinate geometry to nine Ir and six P atoms. There are a spread of Tb–Ir bond distances ranging from 2.98–3.36 Å. There are a spread of Tb–P bond distances ranging from 2.98–3.14 Å. In the fourth Tb site, Tb is bonded in a 7-coordinate geometry to nine Ir and six P atoms. There are a spread of Tb–Ir bond distances ranging from 2.97–3.37 Å. There are a spread of Tb–P bond distances ranging from 2.96–3.13 Å. In the fifth Tb site, Tb is bonded in a 7-coordinate geometry to eight Ir and six P atoms. There are a spread of Tb–Ir bond distances ranging from 3.03–3.39 Å. There are a spread of Tb–P bond distances ranging from 2.98–3.16 Å. In the sixth Tb site, Tb is bonded in a 8-coordinate geometry to ten Ir and six P atoms. There are a spread of Tb–Ir bond distances ranging from 3.04–3.37 Å. There are a spread of Tb–P bond distances ranging from 3.02–3.14 Å. In the seventh Tb site, Tb is bonded in a 8-coordinate geometry to ten Ir and six P atoms. There are a spread of Tb–Ir bond distances ranging from 3.04–3.42 Å. There are a spread of Tb–P bond distances ranging from 3.04–3.14 Å. In the eighth Tb site, Tb is bonded in a 8-coordinate geometry to ten Ir and six P atoms. There are a spread of Tb–Ir bond distances ranging from 3.04–3.38 Å. There are a spread of Tb–P bond distances ranging from 3.02–3.15 Å. In the ninth Tb site, Tb is bonded to six Ir and six P atoms to form distorted TbP6Ir6 cuboctahedra that share a cornercorner with one IrTb4P4Ir4 cuboctahedra, edges with four IrTb4P4Ir4 cuboctahedra, faces with two equivalent TbP6Ir6 cuboctahedra, and faces with two equivalent IrTb3P4Ir5 cuboctahedra. There are a spread of Tb–Ir bond distances ranging from 3.01–3.09 Å. There are a spread of Tb–P bond distances ranging from 2.91–3.13 Å. In the tenth Tb site, Tb is bonded to ten Ir and six P atoms to form distorted TbP6Ir10 cuboctahedra that share corners with four IrTb4P4Ir4 cuboctahedra, edges with four IrTb4P4Ir4 cuboctahedra, faces with two equivalent TbP6Ir10 cuboctahedra, and faces with six IrTb4P4Ir4 cuboctahedra. There are a spread of Tb–Ir bond distances ranging from 2.98–3.53 Å. There are a spread of Tb–P bond distances ranging from 2.95–3.12 Å. In the eleventh Tb site, Tb is bonded in a 2-coordinate geometry to ten Ir and six P atoms. There are a spread of Tb–Ir bond distances ranging from 3.11–3.37 Å. There are a spread of Tb–P bond distances ranging from 2.89–3.07 Å. In the twelfth Tb site, Tb is bonded in a 12-coordinate geometry to ten Ir and six P atoms. There are a spread of Tb–Ir bond distances ranging from 3.14–3.37 Å. There are a spread of Tb–P bond distances ranging from 2.89–3.13 Å. In the thirteenth Tb site, Tb is bonded in a 12-coordinate geometry to nine Ir and six P atoms. There are a spread of Tb–Ir bond distances ranging from 3.12–3.28 Å. There are a spread of Tb–P bond distances ranging from 2.91–3.09 Å. In the fourteenth Tb site, Tb is bonded in a 2-coordinate geometry to ten Ir and six P atoms. There are a spread of Tb–Ir bond distances ranging from 3.11–3.37 Å. There are a spread of Tb–P bond distances ranging from 2.88–3.08 Å. There are thirty-three inequivalent Ir sites. In the first Ir site, Ir is bonded in a 10-coordinate geometry to four Tb, two equivalent Ir, and four P atoms. Both Ir–Ir bond lengths are 2.80 Å. There are a spread of Ir–P bond distances ranging from 2.30–2.45 Å. In the second Ir site, Ir is bonded in a 12-coordinate geometry to four Tb, four Ir, and four P atoms. There are two shorter (2.77 Å) and two longer (2.79 Å) Ir–Ir bond lengths. There are a spread of Ir–P bond distances ranging from 2.33–2.45 Å. In the third Ir site, Ir is bonded in a 12-coordinate geometry to four Tb, four Ir, and four P atoms. Both Ir–Ir bond lengths are 2.80 Å. There are a spread of Ir–P bond distances ranging from 2.33–2.45 Å. In the fourth Ir site, Ir is bonded to four Tb, four Ir, and four P atoms to form a mixture of distorted corner and face-sharing IrTb4P4Ir4 cuboctahedra. Both Ir–Ir bond lengths are 2.79 Å. There are a spread of Ir–P bond distances ranging from 2.35–2.43 Å. In the fifth Ir site, Ir is bonded to three Tb, five Ir, and four P atoms to form distorted IrTb3P4Ir5 cuboctahedra that share corners with three IrTb4P4Ir4 cuboctahedra, faces with two equivalent TbP6Ir6 cuboctahedra, and faces with three IrTb4P4Ir4 cuboctahedra. There are a spread of Ir–Ir bond distances ranging from 2.76–2.83 Å. There are a spread of Ir–P bond distances ranging from 2.30–2.61 Å. In the sixth Ir site, Ir is bonded to three Tb, five Ir, and four P atoms to form distorted IrTb3P4Ir5 cuboctahedra that share corners with seven IrTb4P4Ir4 cuboctahedra, an edgeedge with one IrTb3P4Ir5 cuboctahedra, faces with two equivalent TbP6Ir10 cuboctahedra, and faces with six IrTb4P4Ir4 cuboctahedra. There are a spread of Ir–Ir bond distances ranging from 2.76–2.81 Å. There are a spread of Ir–P bond distances ranging from 2.29–2.62 Å. In the seventh Ir site, Ir is bonded in a 10-coordinate geometry to three Tb, three Ir, and four P atoms. There are one shorter (2.73 Å) and two longer (2.82 Å) Ir–Ir bond lengths. There are a spread of Ir–P bond distances ranging from 2.30–2.70 Å. In the eighth Ir site, Ir is bonded to three Tb, five Ir, and four P atoms to form distorted IrTb3P4Ir5 cuboctahedra that share corners with five IrTb4P4Ir4 cuboctahedra, an edgeedge with one IrTb3P4Ir5 cuboctahedra, faces with two equivalent TbP6Ir10 cuboctahedra, and faces with five IrTb4P4Ir4 cuboctahedra. There are a spread of Ir–Ir bond distances ranging from 2.76–2.81 Å. There are a spread of Ir–P bond distances ranging from 2.29–2.63 Å. In the ninth Ir site, Ir is bonded in a 11-coordinate geometry to three Tb, four Ir, and four P atoms. Both Ir–Ir bond lengths are 2.80 Å. There are two shorter (2.45 Å) and two longer (2.51 Å) Ir–P bond lengths. In the tenth Ir site, Ir is bonded in a 12-coordinate geometry to three Tb, five Ir, and four P atoms. There are two shorter (2.80 Å) and one longer (2.81 Å) Ir–Ir bond lengths. There are two shorter (2.37 Å) and two longer (2.62 Å) Ir–P bond lengths. In the eleventh Ir site, Ir is bonded in a 12-coordinate geometry to three Tb, five Ir, and four P atoms. There are two shorter (2.80 Å) and one longer (2.81 Å) Ir–Ir bond lengths. There are two shorter (2.37 Å) and two longer (2.63 Å) Ir–P bond lengths. In the twelfth Ir site, Ir is bonded in a 12-coordinate geometry to three Tb, five Ir, and four P atoms. There are two shorter (2.80 Å) and one longer (2.81 Å) Ir–Ir bond lengths. There are two shorter (2.37 Å) and two longer (2.63 Å) Ir–P bond lengths. In the thirteenth Ir site, Ir is bonded in a 9-coordinate geometry to six Tb and three P atoms. There are a spread of Ir–P bond distances ranging from 2.33–2.35 Å. In the fourteenth Ir site, Ir is bonded in a 9-coordinate geometry to six Tb and three P atoms. There are a spread of Ir–P bond distances ranging from 2.30–2.33 Å. In the fifteenth Ir site, Ir is bonded in a 9-coordinate geometry to six Tb and three P atoms. There are a spread of Ir–P bond distances ranging from 2.30–2.33 Å. In the sixteenth Ir site, Ir is bonded in a 9-coordinate geometry to six Tb and three P atoms. There are a spread of Ir–P bond distances ranging from 2.30–2.34 Å. In the seventeenth Ir site, Ir is bonded in a 12-coordinate geometry to three Tb, three Ir, and four P atoms. Both Ir–Ir bond lengths are 2.90 Å. There are a spread of Ir–P bond distances ranging from 2.34–2.51 Å. In the eighteenth Ir site, Ir is bonded in a 12-coordinate geometry to five Tb, three Ir, and four P atoms. Both Ir–Ir bond lengths are 2.87 Å. There are a spread of Ir–P bond distances ranging from 2.29–2.50 Å. In the nineteenth Ir site, Ir is bonded in a 12-coordinate geometry to three Tb, three Ir, and four P atoms. Both Ir–Ir bond lengths are 2.85 Å. There are a spread of Ir–P bond distances ranging from 2.28–2.53 Å. In the twentieth Ir site, Ir is bonded in a 12-coordinate geometry to five Tb, three Ir, and four P atoms. Both Ir–Ir bond lengths are 2.87 Å. There are a spread of Ir–P bond distances ranging from 2.29–2.50 Å. In the twenty-first Ir site, Ir is bonded in a 12-coordinate geometry to four Tb, four Ir, and four P atoms. Both Ir–Ir bond lengths are 2.85 Å. There are a spread of Ir–P bond distances ranging from 2.38–2.49 Å. In the twenty-second Ir site, Ir is bonded to four Tb, four Ir, and four P atoms to form distorted IrTb4P4Ir4 cuboctahedra that share corners with two equivalent TbP6Ir10 cuboctahedra, corners with six IrTb4P4Ir4 cuboctahedra, a faceface with one TbP6Ir10 cuboctahedra, and faces with six IrTb4P4Ir4 cuboctahedra. Both Ir–Ir bond lengths are 2.84 Å. There are a spread of Ir–P bond distances ranging from 2.39–2.53 Å. In the twenty-third Ir site, Ir is bonded to four Tb, four Ir, and four P atoms to form distorted IrTb4P4Ir4 cuboctahedra that share a cornercorner with one TbP6Ir6 cuboctahedra, corners with four IrTb4P4Ir4 cuboctahedra, and faces with two equivalent IrTb4P4Ir4 cuboctahedra. There are a spread of Ir–P bond distances ranging from 2.40–2.53 Å. In the twenty-fourth Ir site, Ir is bonded to four Tb, four Ir, and four P atoms to form distorted IrTb4P4Ir4 cuboctahedra that share corners with two equivalent TbP6Ir10 cuboctahedra, corners with five IrTb4P4Ir4 cuboctahedra, a faceface with one TbP6Ir10 cuboctahedra, and faces with six IrTb4P4Ir4 cuboctahedra. There are a spread of Ir–P bond distances ranging from 2.39–2.52 Å. In the twenty-fifth Ir site, Ir is bonded to four Tb, four Ir, and four P atoms to form a mixture of distorted corner and face-sharing IrTb4P4Ir4 cuboctahedra. All Ir–Ir bond lengths are 2.81 Å. There are two shorter (2.44 Å) and two longer (2.45 Å) Ir–P bond lengths. In the twenty-sixth Ir site, Ir is bonded to four Tb, four Ir, and four P atoms to form a mixture of distorted corner and face-sharing IrTb4P4Ir4 cuboctahedra. There are two shorter (2.81 Å) and two longer (2.82 Å) Ir–Ir bond lengths. There are two shorter (2.45 Å) and two longer (2.46 Å) Ir–P bond lengths. In the twenty-seventh Ir site, Ir is bonded to four Tb, four Ir, and four P atoms to form distorted IrTb4P4Ir4 cuboctahedra that share corners with four IrTb4P4Ir4 cuboctahedra, edges with two equivalent TbP6Ir6 cuboctahedra, and faces with five IrTb4P4Ir4 cuboctahedra. There are a spread of Ir–P bond distances ranging from 2.46–2.49 Å. In the twenty-eighth Ir site, Ir is bonded to four Tb, four Ir, and four P atoms to form distorted IrTb4P4Ir4 cuboctahedra that share corners with six IrTb4P4Ir4 cuboctahedra, edges with two equivalent TbP6Ir10 cuboctahedra, and faces with six IrTb4P4Ir4 cuboctahedra. There are a spread of Ir–P bond distances ranging from 2.37–2.57 Å. In the twenty-ninth Ir site, Ir is bonded to four Tb, four Ir, and four P atoms to form distorted IrTb4P4Ir4 cuboctahedra that share corners with six IrTb4P4Ir4 cuboctahedra, edges with two equivalent TbP6Ir6 cuboctahedra, and faces with six IrTb4P4Ir4 cuboctahedra. There are a spread of Ir–P bond distances ranging from 2.37–2.59 Å. In the thirtieth Ir site, Ir is bonded to four Tb, four Ir, and four P atoms to form distorted IrTb4P4Ir4 cuboctahedra that share corners with eight IrTb4P4Ir4 cuboctahedra, edges with two equivalent TbP6Ir10 cuboctahedra, and faces with seven IrTb4P4Ir4 cuboctahedra. There are a spread of Ir–P bond di

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb8O13 by Materials Project

Tb8O13 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are sixteen inequivalent Tb+3.25+ sites. In the first Tb+3.25+ site, Tb+3.25+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Tb–O bond distances ranging from 2.24–2.41 Å. In the second Tb+3.25+ site, Tb+3.25+ is bonded to six O2- atoms to form distorted TbO6 pentagonal pyramids that share corners with two TbO6 octahedra, a cornercorner with one TbO7 pentagonal bipyramid, an edgeedge with one TbO6 octahedra, and edges with three TbO7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 43–52°. There are a spread of Tb–O bond distances ranging from 2.21–2.41 Å. In the third Tb+3.25+ site, Tb+3.25+ is bonded to seven O2- atoms to form distorted TbO7 pentagonal bipyramids that share corners with two TbO7 pentagonal bipyramids, edges with two TbO6 octahedra, edges with two TbO7 pentagonal bipyramids, and edges with two TbO6 pentagonal pyramids. There are a spread of Tb–O bond distances ranging from 2.23–2.54 Å. In the fourth Tb+3.25+ site, Tb+3.25+ is bonded to seven O2- atoms to form distorted TbO7 pentagonal bipyramids that share corners with two TbO7 pentagonal bipyramids, edges with three TbO6 octahedra, edges with three TbO7 pentagonal bipyramids, and edges with two TbO6 pentagonal pyramids. There are a spread of Tb–O bond distances ranging from 2.29–2.55 Å. In the fifth Tb+3.25+ site, Tb+3.25+ is bonded to six O2- atoms to form distorted TbO6 octahedra that share corners with two TbO6 octahedra, corners with two TbO7 pentagonal bipyramids, corners with two TbO6 pentagonal pyramids, an edgeedge with one TbO6 octahedra, and edges with three TbO7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 60–62°. There are a spread of Tb–O bond distances ranging from 2.23–2.39 Å. In the sixth Tb+3.25+ site, Tb+3.25+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Tb–O bond distances ranging from 2.30–2.48 Å. In the seventh Tb+3.25+ site, Tb+3.25+ is bonded to seven O2- atoms to form distorted TbO7 pentagonal bipyramids that share corners with two TbO6 octahedra, a cornercorner with one TbO7 pentagonal bipyramid, an edgeedge with one TbO6 octahedra, edges with three TbO7 pentagonal bipyramids, and an edgeedge with one TbO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 48–62°. There are a spread of Tb–O bond distances ranging from 2.27–2.47 Å. In the eighth Tb+3.25+ site, Tb+3.25+ is bonded to seven O2- atoms to form distorted TbO7 pentagonal bipyramids that share corners with two TbO6 pentagonal pyramids, edges with two TbO6 octahedra, and edges with four TbO7 pentagonal bipyramids. There are a spread of Tb–O bond distances ranging from 2.24–2.48 Å. In the ninth Tb+3.25+ site, Tb+3.25+ is bonded to six O2- atoms to form distorted TbO6 octahedra that share corners with two TbO6 octahedra, corners with two TbO6 pentagonal pyramids, and edges with four TbO7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 60–66°. There are a spread of Tb–O bond distances ranging from 2.22–2.40 Å. In the tenth Tb+3.25+ site, Tb+3.25+ is bonded to six O2- atoms to form distorted TbO6 octahedra that share corners with two TbO6 octahedra, an edgeedge with one TbO6 octahedra, edges with four TbO7 pentagonal bipyramids, and an edgeedge with one TbO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 57–66°. There are a spread of Tb–O bond distances ranging from 2.23–2.37 Å. In the eleventh Tb+3.25+ site, Tb+3.25+ is bonded to six O2- atoms to form distorted TbO6 pentagonal pyramids that share corners with two TbO6 octahedra, a cornercorner with one TbO7 pentagonal bipyramid, edges with two TbO6 octahedra, and edges with four TbO7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 44–51°. There are a spread of Tb–O bond distances ranging from 2.24–2.43 Å. In the twelfth Tb+3.25+ site, Tb+3.25+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Tb–O bond distances ranging from 2.20–2.50 Å. In the thirteenth Tb+3.25+ site, Tb+3.25+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Tb–O bond distances ranging from 2.22–2.60 Å. In the fourteenth Tb+3.25+ site, Tb+3.25+ is bonded to six O2- atoms to form distorted TbO6 octahedra that share corners with two TbO6 octahedra, corners with two TbO7 pentagonal bipyramids, edges with two TbO7 pentagonal bipyramids, and edges with two TbO6 pentagonal pyramids. The corner-sharing octahedra tilt angles range from 57–62°. There are a spread of Tb–O bond distances ranging from 2.26–2.36 Å. In the fifteenth Tb+3.25+ site, Tb+3.25+ is bonded to seven O2- atoms to form distorted TbO7 pentagonal bipyramids that share corners with two TbO7 pentagonal bipyramids, edges with three TbO6 octahedra, edges with two TbO7 pentagonal bipyramids, and an edgeedge with one TbO6 pentagonal pyramid. There are a spread of Tb–O bond distances ranging from 2.27–2.47 Å. In the sixteenth Tb+3.25+ site, Tb+3.25+ is bonded to seven O2- atoms to form distorted TbO7 pentagonal bipyramids that share corners with two TbO6 octahedra, a cornercorner with one TbO7 pentagonal bipyramid, edges with two TbO6 octahedra, edges with four TbO7 pentagonal bipyramids, and an edgeedge with one TbO6 pentagonal pyramid. The corner-sharing octahedra tilt angles range from 47–65°. There are a spread of Tb–O bond distances ranging from 2.24–2.49 Å. There are twenty-six inequivalent O2- sites. In the first O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the second O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the third O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the fourth O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the fifth O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of distorted edge and corner-sharing OTb4 trigonal pyramids. In the sixth O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the seventh O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the eighth O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of distorted edge and corner-sharing OTb4 trigonal pyramids. In the ninth O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the tenth O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the eleventh O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the twelfth O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of distorted edge and corner-sharing OTb4 trigonal pyramids. In the thirteenth O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the fourteenth O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the fifteenth O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the sixteenth O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the seventeenth O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the eighteenth O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the nineteenth O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the twentieth O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the twenty-first O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the twenty-second O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the twenty-third O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the twenty-fourth O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the twenty-fifth O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the twenty-sixth O2- site, O2- is bonded to four Tb+3.25+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb6O11 by Materials Project

Tb6O11 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are twelve inequivalent Tb+3.67+ sites. In the first Tb+3.67+ site, Tb+3.67+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are a spread of Tb–O bond distances ranging from 2.30–2.57 Å. In the second Tb+3.67+ site, Tb+3.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Tb–O bond distances ranging from 2.29–2.38 Å. In the third Tb+3.67+ site, Tb+3.67+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are a spread of Tb–O bond distances ranging from 2.35–2.45 Å. In the fourth Tb+3.67+ site, Tb+3.67+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are a spread of Tb–O bond distances ranging from 2.32–2.51 Å. In the fifth Tb+3.67+ site, Tb+3.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Tb–O bond distances ranging from 2.27–2.43 Å. In the sixth Tb+3.67+ site, Tb+3.67+ is bonded to seven O2- atoms to form distorted TbO7 pentagonal bipyramids that share a cornercorner with one TbO6 octahedra, a cornercorner with one TbO7 pentagonal bipyramid, an edgeedge with one TbO6 octahedra, and an edgeedge with one TbO7 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 55°. There are a spread of Tb–O bond distances ranging from 2.29–2.40 Å. In the seventh Tb+3.67+ site, Tb+3.67+ is bonded to seven O2- atoms to form distorted TbO7 pentagonal bipyramids that share a cornercorner with one TbO6 octahedra, a cornercorner with one TbO7 pentagonal bipyramid, an edgeedge with one TbO6 octahedra, and edges with three TbO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 50°. There are a spread of Tb–O bond distances ranging from 2.24–2.47 Å. In the eighth Tb+3.67+ site, Tb+3.67+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are a spread of Tb–O bond distances ranging from 2.32–2.73 Å. In the ninth Tb+3.67+ site, Tb+3.67+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are a spread of Tb–O bond distances ranging from 2.31–2.51 Å. In the tenth Tb+3.67+ site, Tb+3.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Tb–O bond distances ranging from 2.27–2.43 Å. In the eleventh Tb+3.67+ site, Tb+3.67+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Tb–O bond distances ranging from 2.27–2.49 Å. In the twelfth Tb+3.67+ site, Tb+3.67+ is bonded to six O2- atoms to form a mixture of distorted edge and corner-sharing TbO6 octahedra. There are a spread of Tb–O bond distances ranging from 2.24–2.33 Å. There are twenty-two inequivalent O2- sites. In the first O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the second O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the third O2- site, O2- is bonded in a 4-coordinate geometry to four Tb+3.67+ atoms. In the fourth O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the fifth O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the sixth O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the seventh O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the eighth O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the ninth O2- site, O2- is bonded in a 4-coordinate geometry to four Tb+3.67+ atoms. In the tenth O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the eleventh O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the twelfth O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the thirteenth O2- site, O2- is bonded in a 4-coordinate geometry to four Tb+3.67+ atoms. In the fourteenth O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the fifteenth O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the sixteenth O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the seventeenth O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the eighteenth O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the nineteenth O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the twentieth O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of distorted edge and corner-sharing OTb4 tetrahedra. In the twenty-first O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra. In the twenty-second O2- site, O2- is bonded to four Tb+3.67+ atoms to form a mixture of edge and corner-sharing OTb4 tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb5Te9 by Materials Project

Tb5Te9 crystallizes in the monoclinic P2 space group. The structure is three-dimensional. there are twelve inequivalent Tb+3.60+ sites. In the first Tb+3.60+ site, Tb+3.60+ is bonded to five Te2- atoms to form TbTe5 square pyramids that share corners with two equivalent TbTe7 pentagonal bipyramids, corners with two equivalent TbTe6 pentagonal pyramids, and edges with two equivalent TbTe6 octahedra. There are a spread of Tb–Te bond distances ranging from 2.95–3.17 Å. In the second Tb+3.60+ site, Tb+3.60+ is bonded to six Te2- atoms to form distorted TbTe6 pentagonal pyramids that share corners with two TbTe5 square pyramids and edges with three TbTe6 pentagonal pyramids. There are a spread of Tb–Te bond distances ranging from 3.05–3.29 Å. In the third Tb+3.60+ site, Tb+3.60+ is bonded in a 6-coordinate geometry to six Te2- atoms. There are a spread of Tb–Te bond distances ranging from 2.89–3.48 Å. In the fourth Tb+3.60+ site, Tb+3.60+ is bonded to five Te2- atoms to form TbTe5 square pyramids that share a cornercorner with one TbTe6 pentagonal pyramid, corners with two equivalent TbTe5 square pyramids, and a faceface with one TbTe5 square pyramid. There are a spread of Tb–Te bond distances ranging from 2.94–3.15 Å. In the fifth Tb+3.60+ site, Tb+3.60+ is bonded to six Te2- atoms to form distorted TbTe6 pentagonal pyramids that share corners with two equivalent TbTe7 pentagonal bipyramids, a cornercorner with one TbTe5 square pyramid, and edges with three TbTe6 pentagonal pyramids. There are a spread of Tb–Te bond distances ranging from 2.98–3.26 Å. In the sixth Tb+3.60+ site, Tb+3.60+ is bonded in a distorted hexagonal planar geometry to six Te2- atoms. There are a spread of Tb–Te bond distances ranging from 2.96–3.32 Å. In the seventh Tb+3.60+ site, Tb+3.60+ is bonded to six Te2- atoms to form distorted TbTe6 octahedra that share corners with two equivalent TbTe6 octahedra, an edgeedge with one TbTe7 pentagonal bipyramid, an edgeedge with one TbTe5 square pyramid, and a faceface with one TbTe7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 19–55°. There are a spread of Tb–Te bond distances ranging from 3.02–3.19 Å. In the eighth Tb+3.60+ site, Tb+3.60+ is bonded to seven Te2- atoms to form distorted TbTe7 pentagonal bipyramids that share corners with two equivalent TbTe7 pentagonal bipyramids, corners with two equivalent TbTe6 pentagonal pyramids, a cornercorner with one TbTe5 square pyramid, an edgeedge with one TbTe6 octahedra, and a faceface with one TbTe6 octahedra. There are a spread of Tb–Te bond distances ranging from 3.04–3.35 Å. In the ninth Tb+3.60+ site, Tb+3.60+ is bonded in a 7-coordinate geometry to seven Te2- atoms. There are a spread of Tb–Te bond distances ranging from 3.13–3.48 Å. In the tenth Tb+3.60+ site, Tb+3.60+ is bonded to five Te2- atoms to form TbTe5 square pyramids that share corners with two equivalent TbTe6 pentagonal pyramids and faces with two equivalent TbTe5 square pyramids. There are a spread of Tb–Te bond distances ranging from 2.98–3.18 Å. In the eleventh Tb+3.60+ site, Tb+3.60+ is bonded in a 5-coordinate geometry to five Te2- atoms. There are a spread of Tb–Te bond distances ranging from 2.92–3.19 Å. In the twelfth Tb+3.60+ site, Tb+3.60+ is bonded in a 5-coordinate geometry to five Te2- atoms. There are a spread of Tb–Te bond distances ranging from 2.89–3.19 Å. There are twenty-two inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 1-coordinate geometry to three Tb+3.60+ atoms. In the second Te2- site, Te2- is bonded in a 3-coordinate geometry to three Tb+3.60+ atoms. In the third Te2- site, Te2- is bonded in a 2-coordinate geometry to three Tb+3.60+ and one Te2- atom. The Te–Te bond length is 2.89 Å. In the fourth Te2- site, Te2- is bonded in a 3-coordinate geometry to three Tb+3.60+ atoms. In the fifth Te2- site, Te2- is bonded in a 4-coordinate geometry to three Tb+3.60+ atoms. In the sixth Te2- site, Te2- is bonded in a 3-coordinate geometry to three Tb+3.60+ atoms. In the seventh Te2- site, Te2- is bonded in a 2-coordinate geometry to two Tb+3.60+ atoms. In the eighth Te2- site, Te2- is bonded in a distorted rectangular see-saw-like geometry to four Tb+3.60+ atoms. In the ninth Te2- site, Te2- is bonded in a 4-coordinate geometry to four Tb+3.60+ atoms. In the tenth Te2- site, Te2- is bonded in a rectangular see-saw-like geometry to four Tb+3.60+ atoms. In the eleventh Te2- site, Te2- is bonded in a distorted T-shaped geometry to three Tb+3.60+ atoms. In the twelfth Te2- site, Te2- is bonded in a distorted square co-planar geometry to four Tb+3.60+ atoms. In the thirteenth Te2- site, Te2- is bonded in a 4-coordinate geometry to four Tb+3.60+ atoms. In the fourteenth Te2- site, Te2- is bonded in a 3-coordinate geometry to three Tb+3.60+ atoms. In the fifteenth Te2- site, Te2- is bonded in a 5-coordinate geometry to four Tb+3.60+ and one Te2- atom. In the sixteenth Te2- site, Te2- is bonded in a 1-coordinate geometry to three Tb+3.60+ atoms. In the seventeenth Te2- site, Te2- is bonded in a 3-coordinate geometry to three Tb+3.60+ atoms. In the eighteenth Te2- site, Te2- is bonded in a distorted see-saw-like geometry to four Tb+3.60+ atoms. In the nineteenth Te2- site, Te2- is bonded in a distorted rectangular see-saw-like geometry to four Tb+3.60+ atoms. In the twentieth Te2- site, Te2- is bonded in a distorted T-shaped geometry to three Tb+3.60+ atoms. In the twenty-first Te2- site, Te2- is bonded in a linear geometry to two equivalent Tb+3.60+ atoms. In the twenty-second Te2- site, Te2- is bonded in a bent 150 degrees geometry to two equivalent Tb+3.60+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb5Te9 by Materials Project

Tb5Te9 crystallizes in the monoclinic P2 space group. The structure is three-dimensional. there are twelve inequivalent Tb+3.60+ sites. In the first Tb+3.60+ site, Tb+3.60+ is bonded in a 8-coordinate geometry to eight Te2- atoms. There are a spread of Tb–Te bond distances ranging from 3.16–3.36 Å. In the second Tb+3.60+ site, Tb+3.60+ is bonded in a 8-coordinate geometry to eight Te2- atoms. There are a spread of Tb–Te bond distances ranging from 3.14–3.28 Å. In the third Tb+3.60+ site, Tb+3.60+ is bonded in a 8-coordinate geometry to eight Te2- atoms. There are a spread of Tb–Te bond distances ranging from 3.13–3.30 Å. In the fourth Tb+3.60+ site, Tb+3.60+ is bonded in a 8-coordinate geometry to eight Te2- atoms. There are a spread of Tb–Te bond distances ranging from 3.14–3.32 Å. In the fifth Tb+3.60+ site, Tb+3.60+ is bonded in a 9-coordinate geometry to nine Te2- atoms. There are a spread of Tb–Te bond distances ranging from 3.22–3.32 Å. In the sixth Tb+3.60+ site, Tb+3.60+ is bonded in a 8-coordinate geometry to eight Te2- atoms. There are a spread of Tb–Te bond distances ranging from 3.14–3.32 Å. In the seventh Tb+3.60+ site, Tb+3.60+ is bonded in a 8-coordinate geometry to eight Te2- atoms. There are a spread of Tb–Te bond distances ranging from 3.13–3.30 Å. In the eighth Tb+3.60+ site, Tb+3.60+ is bonded in a distorted pentagonal bipyramidal geometry to seven Te2- atoms. There are a spread of Tb–Te bond distances ranging from 3.13–3.17 Å. In the ninth Tb+3.60+ site, Tb+3.60+ is bonded in a 9-coordinate geometry to nine Te2- atoms. There are a spread of Tb–Te bond distances ranging from 3.22–3.32 Å. In the tenth Tb+3.60+ site, Tb+3.60+ is bonded in a distorted pentagonal bipyramidal geometry to seven Te2- atoms. There are a spread of Tb–Te bond distances ranging from 3.13–3.17 Å. In the eleventh Tb+3.60+ site, Tb+3.60+ is bonded in a 8-coordinate geometry to eight Te2- atoms. There are a spread of Tb–Te bond distances ranging from 3.14–3.29 Å. In the twelfth Tb+3.60+ site, Tb+3.60+ is bonded in a 8-coordinate geometry to eight Te2- atoms. There are a spread of Tb–Te bond distances ranging from 3.16–3.36 Å. There are twenty-two inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 4-coordinate geometry to four Tb+3.60+ and one Te2- atom. The Te–Te bond length is 3.04 Å. In the second Te2- site, Te2- is bonded in a 4-coordinate geometry to four Tb+3.60+ atoms. In the third Te2- site, Te2- is bonded in a 6-coordinate geometry to four Tb+3.60+ atoms. In the fourth Te2- site, Te2- is bonded in a 6-coordinate geometry to four Tb+3.60+ and two equivalent Te2- atoms. In the fifth Te2- site, Te2- is bonded to five Tb+3.60+ atoms to form a mixture of distorted corner and edge-sharing TeTb5 trigonal bipyramids. In the sixth Te2- site, Te2- is bonded in a 6-coordinate geometry to four Tb+3.60+ atoms. In the seventh Te2- site, Te2- is bonded in a 6-coordinate geometry to four Tb+3.60+ and two equivalent Te2- atoms. Both Te–Te bond lengths are 3.04 Å. In the eighth Te2- site, Te2- is bonded to five Tb+3.60+ atoms to form a mixture of distorted corner and edge-sharing TeTb5 trigonal bipyramids. In the ninth Te2- site, Te2- is bonded in a 5-coordinate geometry to five Tb+3.60+ atoms. In the tenth Te2- site, Te2- is bonded in a 5-coordinate geometry to five Tb+3.60+ atoms. In the eleventh Te2- site, Te2- is bonded in a 5-coordinate geometry to five Tb+3.60+ atoms. In the twelfth Te2- site, Te2- is bonded in a 5-coordinate geometry to five Tb+3.60+ atoms. In the thirteenth Te2- site, Te2- is bonded in a 5-coordinate geometry to five Tb+3.60+ atoms. In the fourteenth Te2- site, Te2- is bonded in a 5-coordinate geometry to five Tb+3.60+ atoms. In the fifteenth Te2- site, Te2- is bonded to five Tb+3.60+ atoms to form a mixture of distorted corner and edge-sharing TeTb5 trigonal bipyramids. In the sixteenth Te2- site, Te2- is bonded to five Tb+3.60+ atoms to form a mixture of distorted corner and edge-sharing TeTb5 trigonal bipyramids. In the seventeenth Te2- site, Te2- is bonded in a 5-coordinate geometry to five Tb+3.60+ atoms. In the eighteenth Te2- site, Te2- is bonded to five Tb+3.60+ atoms to form a mixture of distorted corner and edge-sharing TeTb5 trigonal bipyramids. In the nineteenth Te2- site, Te2- is bonded in a 4-coordinate geometry to four Tb+3.60+ and one Te2- atom. In the twentieth Te2- site, Te2- is bonded in a 4-coordinate geometry to four Tb+3.60+ atoms. In the twenty-first Te2- site, Te2- is bonded in a 3-coordinate geometry to three Tb+3.60+ atoms. In the twenty-second Te2- site, Te2- is bonded in a 3-coordinate geometry to three Tb+3.60+ atoms.

36 MATERIALS SCIENCE↗