Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Tb”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 667 records · Page 37
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on TbCdPd by Materials Project

TbPdCd crystallizes in the hexagonal P-62m space group. The structure is three-dimensional. Tb is bonded in a 11-coordinate geometry to five Pd and six equivalent Cd atoms. There are four shorter (3.04 Å) and one longer (3.12 Å) Tb–Pd bond lengths. There are two shorter (3.24 Å) and four longer (3.36 Å) Tb–Cd bond lengths. There are two inequivalent Pd sites. In the first Pd site, Pd is bonded in a 9-coordinate geometry to three equivalent Tb and six equivalent Cd atoms. All Pd–Cd bond lengths are 2.78 Å. In the second Pd site, Pd is bonded in a 9-coordinate geometry to six equivalent Tb and three equivalent Cd atoms. All Pd–Cd bond lengths are 2.89 Å. Cd is bonded in a 10-coordinate geometry to six equivalent Tb and four Pd atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb2(Ga3Ru)3 by Materials Project

Tb2(RuGa3)3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Tb is bonded in a 11-coordinate geometry to eleven Ga atoms. There are a spread of Tb–Ga bond distances ranging from 3.04–3.18 Å. There are two inequivalent Ru sites. In the first Ru site, Ru is bonded in a 8-coordinate geometry to eight Ga atoms. There are a spread of Ru–Ga bond distances ranging from 2.56–2.63 Å. In the second Ru site, Ru is bonded in a 8-coordinate geometry to eight Ga atoms. There are a spread of Ru–Ga bond distances ranging from 2.59–2.62 Å. There are four inequivalent Ga sites. In the first Ga site, Ga is bonded in a 10-coordinate geometry to two equivalent Tb, two equivalent Ru, and six Ga atoms. There are four shorter (2.74 Å) and two longer (2.75 Å) Ga–Ga bond lengths. In the second Ga site, Ga is bonded in a 3-coordinate geometry to three equivalent Tb, three Ru, and five Ga atoms. There are a spread of Ga–Ga bond distances ranging from 2.76–2.98 Å. In the third Ga site, Ga is bonded in a 10-coordinate geometry to two equivalent Tb, three Ru, and five Ga atoms. There are one shorter (2.71 Å) and two longer (2.83 Å) Ga–Ga bond lengths. In the fourth Ga site, Ga is bonded in a 10-coordinate geometry to two equivalent Tb, two equivalent Ru, and six Ga atoms. The Ga–Ga bond length is 2.73 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb9Al5S21 by Materials Project

Tb9Al5S21 crystallizes in the trigonal R3 space group. The structure is three-dimensional. there are six inequivalent Tb3+ sites. In the first Tb3+ site, Tb3+ is bonded to seven S2- atoms to form distorted TbS7 pentagonal bipyramids that share a cornercorner with one AlS6 octahedra, corners with four TbS7 pentagonal bipyramids, corners with two AlS4 tetrahedra, edges with two TbS7 pentagonal bipyramids, an edgeedge with one AlS4 tetrahedra, and a faceface with one AlS6 octahedra. The corner-sharing octahedral tilt angles are 21°. There are a spread of Tb–S bond distances ranging from 2.77–2.92 Å. In the second Tb3+ site, Tb3+ is bonded in a 7-coordinate geometry to eight S2- atoms. There are a spread of Tb–S bond distances ranging from 2.75–3.34 Å. In the third Tb3+ site, Tb3+ is bonded to seven S2- atoms to form distorted TbS7 pentagonal bipyramids that share a cornercorner with one AlS6 octahedra, corners with five TbS7 pentagonal bipyramids, corners with two AlS4 tetrahedra, an edgeedge with one AlS6 octahedra, edges with two TbS7 pentagonal bipyramids, and an edgeedge with one AlS4 tetrahedra. The corner-sharing octahedral tilt angles are 38°. There are a spread of Tb–S bond distances ranging from 2.78–2.93 Å. In the fourth Tb3+ site, Tb3+ is bonded to seven S2- atoms to form distorted TbS7 pentagonal bipyramids that share a cornercorner with one AlS6 octahedra, corners with five TbS7 pentagonal bipyramids, corners with two AlS4 tetrahedra, edges with two TbS7 pentagonal bipyramids, an edgeedge with one AlS4 tetrahedra, and a faceface with one AlS6 octahedra. The corner-sharing octahedral tilt angles are 21°. There are a spread of Tb–S bond distances ranging from 2.73–2.98 Å. In the fifth Tb3+ site, Tb3+ is bonded in a 7-coordinate geometry to eight S2- atoms. There are a spread of Tb–S bond distances ranging from 2.75–3.33 Å. In the sixth Tb3+ site, Tb3+ is bonded to seven S2- atoms to form distorted TbS7 pentagonal bipyramids that share a cornercorner with one AlS6 octahedra, corners with four TbS7 pentagonal bipyramids, corners with two AlS4 tetrahedra, an edgeedge with one AlS6 octahedra, edges with two TbS7 pentagonal bipyramids, and an edgeedge with one AlS4 tetrahedra. The corner-sharing octahedral tilt angles are 38°. There are a spread of Tb–S bond distances ranging from 2.77–2.95 Å. There are six inequivalent Al3+ sites. In the first Al3+ site, Al3+ is bonded to four S2- atoms to form AlS4 tetrahedra that share corners with four TbS7 pentagonal bipyramids and edges with two TbS7 pentagonal bipyramids. There are a spread of Al–S bond distances ranging from 2.23–2.25 Å. In the second Al3+ site, Al3+ is bonded to four S2- atoms to form AlS4 tetrahedra that share corners with four TbS7 pentagonal bipyramids and edges with two TbS7 pentagonal bipyramids. There are a spread of Al–S bond distances ranging from 2.23–2.26 Å. In the third Al3+ site, Al3+ is bonded to six S2- atoms to form AlS6 octahedra that share corners with three equivalent TbS7 pentagonal bipyramids, a faceface with one AlS6 octahedra, and faces with three equivalent TbS7 pentagonal bipyramids. There are three shorter (2.41 Å) and three longer (2.47 Å) Al–S bond lengths. In the fourth Al3+ site, Al3+ is bonded to six S2- atoms to form AlS6 octahedra that share corners with three equivalent TbS7 pentagonal bipyramids, edges with three equivalent TbS7 pentagonal bipyramids, and a faceface with one AlS6 octahedra. There are three shorter (2.32 Å) and three longer (2.62 Å) Al–S bond lengths. In the fifth Al3+ site, Al3+ is bonded to six S2- atoms to form AlS6 octahedra that share corners with three equivalent TbS7 pentagonal bipyramids, edges with three equivalent TbS7 pentagonal bipyramids, and a faceface with one AlS6 octahedra. There are three shorter (2.32 Å) and three longer (2.63 Å) Al–S bond lengths. In the sixth Al3+ site, Al3+ is bonded to six S2- atoms to form AlS6 octahedra that share corners with three equivalent TbS7 pentagonal bipyramids, a faceface with one AlS6 octahedra, and faces with three equivalent TbS7 pentagonal bipyramids. There are three shorter (2.41 Å) and three longer (2.47 Å) Al–S bond lengths. There are fourteen inequivalent S2- sites. In the first S2- site, S2- is bonded to three Tb3+ and one Al3+ atom to form distorted STb3Al tetrahedra that share corners with three STb3Al2 square pyramids and corners with three STb3Al trigonal pyramids. In the second S2- site, S2- is bonded to three Tb3+ and one Al3+ atom to form distorted STb3Al tetrahedra that share corners with three STb3Al2 square pyramids and corners with three STb3Al trigonal pyramids. In the third S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to three Tb3+ and one Al3+ atom. In the fourth S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to three Tb3+ and one Al3+ atom. In the fifth S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to three Tb3+ and one Al3+ atom. In the sixth S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to three Tb3+ and one Al3+ atom. In the seventh S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to three Tb3+ and one Al3+ atom. In the eighth S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to three Tb3+ and one Al3+ atom. In the ninth S2- site, S2- is bonded in a 4-coordinate geometry to four Tb3+ and one Al3+ atom. In the tenth S2- site, S2- is bonded to three Tb3+ and two Al3+ atoms to form distorted STb3Al2 square pyramids that share corners with three STb3Al tetrahedra, a cornercorner with one STb3Al trigonal pyramid, edges with two equivalent STb3Al trigonal pyramids, and faces with two equivalent STb3Al2 square pyramids. In the eleventh S2- site, S2- is bonded to three Tb3+ and one Al3+ atom to form distorted STb3Al trigonal pyramids that share a cornercorner with one STb3Al2 square pyramid, corners with three STb3Al tetrahedra, edges with two equivalent STb3Al2 square pyramids, and edges with two equivalent STb3Al trigonal pyramids. In the twelfth S2- site, S2- is bonded to three Tb3+ and two Al3+ atoms to form distorted STb3Al2 square pyramids that share corners with three STb3Al tetrahedra, a cornercorner with one STb3Al trigonal pyramid, edges with two equivalent STb3Al trigonal pyramids, and faces with two equivalent STb3Al2 square pyramids. In the thirteenth S2- site, S2- is bonded to three Tb3+ and one Al3+ atom to form distorted STb3Al trigonal pyramids that share a cornercorner with one STb3Al2 square pyramid, corners with three STb3Al tetrahedra, edges with two equivalent STb3Al2 square pyramids, and edges with two equivalent STb3Al trigonal pyramids. In the fourteenth S2- site, S2- is bonded in a 4-coordinate geometry to four Tb3+ and one Al3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TbCoGe2 by Materials Project

TbCoGe2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Tb is bonded in a 10-coordinate geometry to four equivalent Co and ten Ge atoms. All Tb–Co bond lengths are 3.20 Å. There are a spread of Tb–Ge bond distances ranging from 3.12–3.27 Å. Co is bonded in a 5-coordinate geometry to four equivalent Tb and five Ge atoms. There are a spread of Co–Ge bond distances ranging from 2.26–2.38 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 1-coordinate geometry to six equivalent Tb, one Co, and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.57 Å. In the second Ge site, Ge is bonded in a 4-coordinate geometry to four equivalent Tb and four equivalent Co atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb2(Al3Ir)3 by Materials Project

Tb2(IrAl3)3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Tb is bonded in a 11-coordinate geometry to eleven Al atoms. There are a spread of Tb–Al bond distances ranging from 3.05–3.15 Å. There are two inequivalent Ir sites. In the first Ir site, Ir is bonded in a 8-coordinate geometry to eight Al atoms. There are four shorter (2.57 Å) and four longer (2.62 Å) Ir–Al bond lengths. In the second Ir site, Ir is bonded in a 8-coordinate geometry to eight Al atoms. There are a spread of Ir–Al bond distances ranging from 2.56–2.61 Å. There are four inequivalent Al sites. In the first Al site, Al is bonded in a 2-coordinate geometry to two equivalent Tb and two equivalent Ir atoms. In the second Al site, Al is bonded in a 3-coordinate geometry to three equivalent Tb, three Ir, and one Al atom. The Al–Al bond length is 2.78 Å. In the third Al site, Al is bonded in a 3-coordinate geometry to two equivalent Tb, three Ir, and five Al atoms. There are one shorter (2.72 Å) and two longer (2.87 Å) Al–Al bond lengths. In the fourth Al site, Al is bonded in a 2-coordinate geometry to two equivalent Tb, two equivalent Ir, and two equivalent Al atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2023

Revealing Site Occupancy in a Complex Oxide: Terbium Iron Garnet

Complex oxide films stabilized by epitaxial growth can exhibit large populations of point defects which have important effects on their properties. The site occupancy of pulsed laser-deposited epitaxial terbium iron garnet (TbIG) films with excess terbium (Tb) is analyzed, in which the terbium:iron (Tb:Fe)ratio is 0.86 compared to the stoichiometric value of 0.6. The magnetic properties of the TbIG are sensitive to site occupancy, exhibiting a higher compensation temperature (by 90 K) and a lower Curie temperature (by 40 K) than the bulk Tb 3 Fe 5 O 12 garnet. Data derived from X-ray core-level spectroscopy, magnetometry, and molecular field coefficient modeling are consistent with occupancy of the dodecahedral sites by Tb 3+ , the octahedral sites by Fe 3+ , Tb 3+ and vacancies, and the tetrahedral sites by Fe 3+ and vacancies. Energy dispersive X-ray spectroscopy in a scanning transmission electron microscope provides direct evidence of Tb Fe antisites. A small fraction of Fe 2+ is present, and oxygen vacancies are inferred to be present to maintain charge neutrality. In conclusion, variation of the site occupancies provides a path to considerable manipulation of the magnetic properties of epitaxial iron garnet films and other complex oxides, which readily accommodate stoichiometries not found in their bulk counterparts.

36 MATERIALS SCIENCE↗
DOE OSTI2020

< c+a > dislocations in {101 - 2} twins in Mg: A kinematic and energetic requirement

Consideration of published TEM and molecular dynamics studies of interactions between matrix dislocations and {101¯2} twin boundaries (TB) in hexagonal close packed metals inspires a hypothesis regarding the formation of dislocations with < c+a > Burgers vectors inside the twins. It was previously reported that when basal < a > dislocations from the matrix are swept by an advancing TB, they are converted into partial dislocations bounding basal I 1 stacking faults (SFs) within the twin. In the present work, we show that this dislocation configuration near TB renders it energetically favorable for a pair of partial dislocations to constrict into a dislocation within the twin. New in situ TEM observations confirm this hypothesis by revealing long < c+a > dislocation dipoles terminated by the TB at one end and by I1 SFs within the twin at the other end. Finally, the resulting near-screw < c+a > dislocation dipoles are observed to be glissile, enabling self-annihilation in some circumstances. Thus, rather than requiring a high energy dislocation pile-up to press two < a > dislocations through a TB into a single < c+a > dislocation, it is demonstrated that < c+a > dislocations naturally form, within {101¯2} twins in Mg, as TB migrates into a matrix, which inevitably contains dislocations with < a > Burgers vectors. Furthermore, these observations help to explain how the twins themselves may subsequently deform and why they may be particularly vulnerable to plastic, shear localization.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Systems biology predicts that fibrosis in tuberculous granulomas may arise through macrophage-to-myofibroblast transformation

Mycobacterium tuberculosis (Mtb) infection causes tuberculosis (TB), a disease characterized by development of granulomas. Granulomas consist of activated immune cells that cluster together to limit bacterial growth and restrict dissemination. Control of the TB epidemic has been limited by lengthy drug regimens, antibiotic resistance, and lack of a robustly efficacious vaccine. Fibrosis commonly occurs during treatment and is associated with both positive and negative disease outcomes in TB but little is known about the processes that initiate fibrosis in granulomas. Human and nonhuman primate granulomas undergoing fibrosis can have spindle-shaped macrophages with fibroblast-like morphologies suggesting a relationship between macrophages, fibroblasts, and granuloma fibrosis. This relationship has been difficult to investigate because of the limited availability of human pathology samples, the time scale involved in human TB, and overlap between fibroblast and myeloid cell markers in tissues. To better understand the origins of fibrosis in TB, we used a computational model of TB granuloma biology to identify factors that drive fibrosis over the course of local disease progression. We validated the model with granulomas from nonhuman primates to delineate myeloid cells and lung-resident fibroblasts. Our results suggest that peripheral granuloma fibrosis, which is commonly observed, can arise through macrophage-to-myofibroblast transformation (MMT). Further, we hypothesize that MMT is induced in M1 macrophages through a sequential combination of inflammatory and anti-inflammatory signaling in granuloma macrophages. We predict that MMT may be a mechanism underlying granuloma-associated fibrosis and warrants further investigation into myeloid cells as drivers of fibrotic disease.

59 BASIC BIOLOGICAL SCIENCES↗
DOE OSTI2021

Nutritional markers and proteome in patients undergoing treatment for pulmonary tuberculosis differ by geographic region

Contemporary phase 2 TB disease treatment clinical trials have found that microbiologic treatment responses differ between African versus non-African regions, the reasons for which remain unclear. Understanding host and disease phenotypes that may vary by region is important for optimizing curative treatments. We characterized clinical features and the serum proteome of phase 2 TB clinical trial participants undergoing treatment for smear positive, culture-confirmed TB, comparing host serum protein expression in clinical trial participants enrolled in African and Non-African regions. Serum samples were collected from 289 participants enrolled in the Centers for Disease Control and Prevention TBTC Study 29 (NCT00694629) at time of enrollment and at the end of the intensive phase (after 40 doses of TB treatment). After a peptide level proteome analysis utilizing a unique liquid chromatography IM-MS platform (LC-IM-MS) and subsequent statistical analysis, a total of 183 core proteins demonstrated significant differences at both baseline and at week 8 timepoints between participants enrolled from African and non-African regions. The majority of the differentially expressed proteins were upregulated in participants from the African region, and included acute phase proteins, mediators of inflammation, as well as coagulation and complement pathways. Downregulated proteins in the African population were primarily linked to nutritional status and lipid metabolism pathways. We have identified differentially expressed nutrition and lipid pathway proteins by geographic region in TB patients undergoing treatment for pulmonary tuberculosis, which appear to be associated with differential treatment responses. Future TB clinical trials should collect expanded measures of nutritional status and further evaluate the relationship between nutrition and microbiologic treatment response.

59 BASIC BIOLOGICAL SCIENCES↗
DOE OSTI2020

Materials Data on TbGaPd by Materials Project

TbPdGa crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Tb is bonded in a 1-coordinate geometry to five equivalent Pd and six equivalent Ga atoms. There are a spread of Tb–Pd bond distances ranging from 2.92–3.16 Å. There are a spread of Tb–Ga bond distances ranging from 3.11–3.24 Å. Pd is bonded in a 9-coordinate geometry to five equivalent Tb and four equivalent Ga atoms. There are three shorter (2.62 Å) and one longer (2.76 Å) Pd–Ga bond lengths. Ga is bonded in a 10-coordinate geometry to six equivalent Tb and four equivalent Pd atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TbAl7Au3 by Materials Project

TbAu3Al7 crystallizes in the trigonal R-3c space group. The structure is three-dimensional. Tb is bonded in a 6-coordinate geometry to six equivalent Au and twelve equivalent Al atoms. All Tb–Au bond lengths are 3.26 Å. There are six shorter (3.32 Å) and six longer (3.38 Å) Tb–Al bond lengths. Au is bonded in a 9-coordinate geometry to two equivalent Tb and seven Al atoms. There are a spread of Au–Al bond distances ranging from 2.59–2.67 Å. There are two inequivalent Al sites. In the first Al site, Al is bonded in a distorted trigonal planar geometry to two equivalent Tb and three equivalent Au atoms. In the second Al site, Al is bonded in a trigonal planar geometry to three equivalent Au atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TbAlPd by Materials Project

TbPdAl crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Tb is bonded in a 1-coordinate geometry to five equivalent Pd and six equivalent Al atoms. There are a spread of Tb–Pd bond distances ranging from 2.86–3.13 Å. There are a spread of Tb–Al bond distances ranging from 3.09–3.30 Å. Pd is bonded in a 9-coordinate geometry to five equivalent Tb and four equivalent Al atoms. There are a spread of Pd–Al bond distances ranging from 2.62–2.70 Å. Al is bonded in a 4-coordinate geometry to six equivalent Tb and four equivalent Pd atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb2AlCo2 by Materials Project

Tb2Co2Al crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. Tb is bonded in a 10-coordinate geometry to six equivalent Co and four equivalent Al atoms. There are four shorter (2.91 Å) and two longer (2.93 Å) Tb–Co bond lengths. There are two shorter (3.21 Å) and two longer (3.24 Å) Tb–Al bond lengths. Co is bonded in a 9-coordinate geometry to six equivalent Tb, one Co, and two equivalent Al atoms. The Co–Co bond length is 2.44 Å. Both Co–Al bond lengths are 2.52 Å. Al is bonded to eight equivalent Tb and four equivalent Co atoms to form a mixture of distorted edge and face-sharing AlTb8Co4 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb2ZnNi2 by Materials Project

Tb2Ni2Zn crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. Tb is bonded in a 10-coordinate geometry to six equivalent Ni and four equivalent Zn atoms. There are two shorter (2.83 Å) and four longer (2.96 Å) Tb–Ni bond lengths. There are two shorter (3.15 Å) and two longer (3.22 Å) Tb–Zn bond lengths. Ni is bonded in a 9-coordinate geometry to six equivalent Tb, one Ni, and two equivalent Zn atoms. The Ni–Ni bond length is 2.48 Å. Both Ni–Zn bond lengths are 2.57 Å. Zn is bonded to eight equivalent Tb and four equivalent Ni atoms to form a mixture of distorted edge and face-sharing ZnTb8Ni4 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TbAl2Ni by Materials Project

TbNiAl2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Tb is bonded in a 1-coordinate geometry to three equivalent Ni and ten equivalent Al atoms. There are one shorter (2.85 Å) and two longer (3.07 Å) Tb–Ni bond lengths. There are a spread of Tb–Al bond distances ranging from 3.09–3.32 Å. Ni is bonded in a 9-coordinate geometry to three equivalent Tb and six equivalent Al atoms. There are two shorter (2.46 Å) and four longer (2.50 Å) Ni–Al bond lengths. Al is bonded in a 3-coordinate geometry to five equivalent Tb and three equivalent Ni atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb3InN by Materials Project

Tb3InN is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Tb is bonded in a linear geometry to four equivalent In and two equivalent N atoms. All Tb–In bond lengths are 3.43 Å. Both Tb–N bond lengths are 2.42 Å. In is bonded to twelve equivalent Tb atoms to form InTb12 cuboctahedra that share corners with twelve equivalent InTb12 cuboctahedra, faces with six equivalent InTb12 cuboctahedra, and faces with eight equivalent NTb6 octahedra. N is bonded to six equivalent Tb atoms to form NTb6 octahedra that share corners with six equivalent NTb6 octahedra and faces with eight equivalent InTb12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TbCuPb by Materials Project

TbCuPb crystallizes in the hexagonal P6_3mc space group. The structure is three-dimensional. Tb is bonded in a 12-coordinate geometry to six equivalent Cu and six equivalent Pb atoms. There are three shorter (2.97 Å) and three longer (3.60 Å) Tb–Cu bond lengths. There are three shorter (3.17 Å) and three longer (3.34 Å) Tb–Pb bond lengths. Cu is bonded in a 10-coordinate geometry to six equivalent Tb and four equivalent Pb atoms. There are three shorter (2.76 Å) and one longer (3.01 Å) Cu–Pb bond lengths. Pb is bonded in a 10-coordinate geometry to six equivalent Tb and four equivalent Cu atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TbSiIr by Materials Project

TbIrSi crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Tb is bonded in a 11-coordinate geometry to six equivalent Ir and five equivalent Si atoms. There are a spread of Tb–Ir bond distances ranging from 2.99–3.32 Å. There are two shorter (2.97 Å) and three longer (3.02 Å) Tb–Si bond lengths. Ir is bonded in a 10-coordinate geometry to six equivalent Tb and four equivalent Si atoms. There are a spread of Ir–Si bond distances ranging from 2.48–2.59 Å. Si is bonded in a 9-coordinate geometry to five equivalent Tb and four equivalent Ir atoms.

36 MATERIALS SCIENCE↗