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At least 343 records · Page 19
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on HoNiGe3 by Materials Project

HoNiGe3 crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. Ho is bonded in a 4-coordinate geometry to four equivalent Ni and ten Ge atoms. All Ho–Ni bond lengths are 3.16 Å. There are a spread of Ho–Ge bond distances ranging from 3.08–3.20 Å. Ni is bonded in a 9-coordinate geometry to four equivalent Ho and five Ge atoms. There are a spread of Ni–Ge bond distances ranging from 2.29–2.35 Å. There are three inequivalent Ge sites. In the first Ge site, Ge is bonded in a 1-coordinate geometry to six equivalent Ho, one Ni, and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.50 Å. In the second Ge site, Ge is bonded in a 2-coordinate geometry to two equivalent Ho, two equivalent Ni, and five Ge atoms. There are one shorter (2.48 Å) and four longer (2.90 Å) Ge–Ge bond lengths. In the third Ge site, Ge is bonded in a 2-coordinate geometry to two equivalent Ho, two equivalent Ni, and five Ge atoms. The Ge–Ge bond length is 2.48 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho3Co by Materials Project

Ho3Co is Cementite structured and crystallizes in the orthorhombic Pnma space group. The structure is two-dimensional and consists of two Ho3Co sheets oriented in the (0, 0, 1) direction. there are two inequivalent Ho sites. In the first Ho site, Ho is bonded in a 2-coordinate geometry to two equivalent Co atoms. There are one shorter (2.73 Å) and one longer (2.82 Å) Ho–Co bond lengths. In the second Ho site, Ho is bonded in a distorted bent 150 degrees geometry to two equivalent Co atoms. There are one shorter (2.67 Å) and one longer (2.75 Å) Ho–Co bond lengths. Co is bonded in a 6-coordinate geometry to six Ho atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho2Fe5Co12 by Materials Project

Ho2Fe5Co12 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Ho sites. In the first Ho site, Ho is bonded in a 12-coordinate geometry to eighteen Co atoms. There are a spread of Ho–Co bond distances ranging from 2.94–3.22 Å. In the second Ho site, Ho is bonded in a 8-coordinate geometry to eight Fe and twelve Co atoms. There are two shorter (2.89 Å) and six longer (3.15 Å) Ho–Fe bond lengths. There are six shorter (3.02 Å) and six longer (3.09 Å) Ho–Co bond lengths. There are two inequivalent Fe sites. In the first Fe site, Fe is bonded in a 2-coordinate geometry to one Ho, four Fe, and nine Co atoms. There are one shorter (2.33 Å) and three longer (2.56 Å) Fe–Fe bond lengths. There are three shorter (2.65 Å) and six longer (2.70 Å) Fe–Co bond lengths. In the second Fe site, Fe is bonded to two equivalent Ho, two equivalent Fe, and eight Co atoms to form distorted FeHo2Fe2Co8 cuboctahedra that share corners with four equivalent FeHo2Fe2Co8 cuboctahedra, corners with eighteen CoHo3Fe3Co6 cuboctahedra, edges with ten CoHo3Fe3Co6 cuboctahedra, faces with six equivalent FeHo2Fe2Co8 cuboctahedra, and faces with twelve CoHo2Fe4Co6 cuboctahedra. There are four shorter (2.41 Å) and four longer (2.44 Å) Fe–Co bond lengths. There are two inequivalent Co sites. In the first Co site, Co is bonded to two Ho, four Fe, and six Co atoms to form distorted CoHo2Fe4Co6 cuboctahedra that share corners with four equivalent FeHo2Fe2Co8 cuboctahedra, corners with twenty CoHo2Fe4Co6 cuboctahedra, edges with two equivalent FeHo2Fe2Co8 cuboctahedra, edges with three CoHo3Fe3Co6 cuboctahedra, faces with four equivalent FeHo2Fe2Co8 cuboctahedra, and faces with seventeen CoHo2Fe4Co6 cuboctahedra. There are a spread of Co–Co bond distances ranging from 2.35–2.57 Å. In the second Co site, Co is bonded to three Ho, three Fe, and six Co atoms to form distorted CoHo3Fe3Co6 cuboctahedra that share corners with five equivalent FeHo2Fe2Co8 cuboctahedra, corners with eighteen CoHo3Fe3Co6 cuboctahedra, edges with three equivalent FeHo2Fe2Co8 cuboctahedra, edges with seven CoHo3Fe3Co6 cuboctahedra, faces with two equivalent FeHo2Fe2Co8 cuboctahedra, and faces with eighteen CoHo2Fe4Co6 cuboctahedra. Both Co–Co bond lengths are 2.39 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho12Ni6Pb by Materials Project

Ho12Ni6Pb crystallizes in the cubic Im-3 space group. The structure is three-dimensional. Ho is bonded in a 1-coordinate geometry to four equivalent Ni and one Pb atom. There are a spread of Ho–Ni bond distances ranging from 2.62–3.48 Å. The Ho–Pb bond length is 3.46 Å. Ni is bonded in a 2-coordinate geometry to eight equivalent Ho and one Ni atom. The Ni–Ni bond length is 2.38 Å. Pb is bonded in a cuboctahedral geometry to twelve equivalent Ho atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2023

Editorial: Rising stars in plant ROS/redox biology under abiotic stress conditions

Plants are constantly subjected to a wide range of abiotic stresses including salinity, high temperatures, drought, or cold, among others, that negatively impact their growth and development and cause crop yield losses worldwide (Lesk et al., 2016; Bailey-Serres et al., 2019). These stress conditions induce the accumulation of reactive oxygen species (ROS) such as hydrogen peroxide (H 2 O 2 ), superoxide ($O_{2•}$$^—$), singlet oxygen ($^1O_2$), or hydroxyl radical (HO·). ROS play a key role in stress sensing and signaling, as well as in the activation of different mechanism involved in plant acclimation to different stresses (Mittler et al., 2022). However, ROS levels that are too high are cytotoxic (Mittler, 2017). To prevent cellular oxidation by ROS, an interplay between ROS production, scavenging and transport maintains ROS at controlled concentrations, as well as drives ROS signaling responses involved in plant acclimation to stress (Baxter et al., 2014; Mittler et al., 2022).

protein carbonylation↗
NASA NTRS1992

Efficient CW diode-pumped Tm, Ho:YLF laser with tunability near 2.067 microns

A conversion efficiency of 42 percent and slope efficiency of approximately 60 percent relative to absorbed pump power are reported from a continuous wave diode-pumped Tm, Ho:YLF laser at 2 microns with output power of 84 mW at sub-ambient temperatures. The emission spectrum is etalon tunable over a range of 16/cm centered on 2.067 microns, with fine tuning capability of the transition frequency with crystal temperature at a measured rate of about -0.03/cm-K. The effective emission cross section is measured to be 5 x 10 exp -21 sq cm. These and other aspects of the laser performance are discussed in the context of calculated atmospheric absorption characteristics in this spectral region and potential use in remote sensing applications.

Mcguckin, B. T.↗
NASA NTRS1993

Tunable CW diode-pumped Tm,Ho:YLiF4 laser operating at or near room temperature

A conversion efficiency of 42 percent and slope efficiency of 60 percent relative to absorbed pump power are obtained from a continuous wave diode-pumped Tm,Ho:YLiF4 laser at 2 microns with output power of 84mW at a crystal temperature of 275K. The emission spectrum is etalon tunable over a range of 7nm (16.3 cm(sup -1) centered on 2.067 microns with fine tuning capability of the transition frequency with crystal temperature at a measured rate of -0.03/(cm)K. The effective emission cross-section is measured to be 5 x 10(sup -21) cm squared. These and other aspects of the laser performance are disclosed in the context of calculated atmospheric absorption characteristics in this spectral region and potential use in remote sensing applications. Single frequency output and frequency stabilization are achieved using an intracavity etalon in conjunction with an external reference etalon.

Mcguckin, Brendan T.↗
NASA NTRS1995

Tunable CW diode-pumped Tm,Ho:YLiF4 laser operating at or near room temperature

A conversion efficiency of 42% and slope efficiency of 60% relative to absorbed pump power are obtained from a continuous wave diode-pumped Tm,Ho:YLiF4 laser at 2 microns with output power of 84 mW at a crystal temperature of 275 K. The emission spectrum is etalon tunable over a range of7 nm (16.3/cm) centered on 2.067 microns with fine tuning capability of the transition frequency with crystal temperature at a measured rate of -0.03/(cm)K. The effective emission cross-section is measured to be 5 x 10(exp -21) cm squared. These and other aspects of the laser performance are disclosed in the context of calculated atmospheric absorption characteristics in this spectral region and potential use in remote sensing applications. Single frequency output and frequency stabilization are achieved using an intracavity etalon in conjunction with an external reference etalon.

Mcguckin, Brendan T.↗
DOE OSTI2020

Materials Data on Ho2Co12Ni5 by Materials Project

Ho2Co12Ni5 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Ho sites. In the first Ho site, Ho is bonded in a 12-coordinate geometry to eighteen Co atoms. There are a spread of Ho–Co bond distances ranging from 2.94–3.20 Å. In the second Ho site, Ho is bonded in a 2-coordinate geometry to twelve Co and eight Ni atoms. There are six shorter (3.01 Å) and six longer (3.05 Å) Ho–Co bond lengths. There are two shorter (2.80 Å) and six longer (3.12 Å) Ho–Ni bond lengths. There are two inequivalent Co sites. In the first Co site, Co is bonded to two Ho, six Co, and four Ni atoms to form distorted CoHo2Co6Ni4 cuboctahedra that share corners with four equivalent NiHo2Co8Ni2 cuboctahedra, corners with twenty CoHo2Co6Ni4 cuboctahedra, edges with two equivalent NiHo2Co8Ni2 cuboctahedra, edges with three CoHo3Co6Ni3 cuboctahedra, faces with four equivalent NiHo2Co8Ni2 cuboctahedra, and faces with seventeen CoHo2Co6Ni4 cuboctahedra. There are a spread of Co–Co bond distances ranging from 2.30–2.53 Å. There are two shorter (2.38 Å) and two longer (2.67 Å) Co–Ni bond lengths. In the second Co site, Co is bonded to three Ho, six Co, and three Ni atoms to form distorted CoHo3Co6Ni3 cuboctahedra that share corners with five equivalent NiHo2Co8Ni2 cuboctahedra, corners with eighteen CoHo3Co6Ni3 cuboctahedra, edges with three equivalent NiHo2Co8Ni2 cuboctahedra, edges with seven CoHo3Co6Ni3 cuboctahedra, faces with two equivalent NiHo2Co8Ni2 cuboctahedra, and faces with eighteen CoHo2Co6Ni4 cuboctahedra. Both Co–Co bond lengths are 2.36 Å. There are two shorter (2.43 Å) and one longer (2.65 Å) Co–Ni bond lengths. There are two inequivalent Ni sites. In the first Ni site, Ni is bonded to two equivalent Ho, eight Co, and two equivalent Ni atoms to form NiHo2Co8Ni2 cuboctahedra that share corners with four equivalent NiHo2Co8Ni2 cuboctahedra, corners with eighteen CoHo3Co6Ni3 cuboctahedra, edges with ten CoHo3Co6Ni3 cuboctahedra, faces with six equivalent NiHo2Co8Ni2 cuboctahedra, and faces with twelve CoHo2Co6Ni4 cuboctahedra. Both Ni–Ni bond lengths are 2.52 Å. In the second Ni site, Ni is bonded in a 1-coordinate geometry to one Ho, nine Co, and four Ni atoms. The Ni–Ni bond length is 2.42 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho11(Ni10C)6 by Materials Project

Ho11(Ni10C)6 crystallizes in the cubic Im-3m space group. The structure is three-dimensional. there are two inequivalent Ho sites. In the first Ho site, Ho is bonded in a 6-coordinate geometry to fifteen Ni atoms. There are a spread of Ho–Ni bond distances ranging from 2.83–2.98 Å. In the second Ho site, Ho is bonded in a 2-coordinate geometry to twelve Ni and two equivalent C atoms. There are four shorter (3.11 Å) and eight longer (3.27 Å) Ho–Ni bond lengths. Both Ho–C bond lengths are 2.61 Å. There are four inequivalent Ni sites. In the first Ni site, Ni is bonded in a single-bond geometry to four equivalent Ho and one C atom. The Ni–C bond length is 1.83 Å. In the second Ni site, Ni is bonded in a 6-coordinate geometry to two equivalent Ho and twelve Ni atoms. There are four shorter (2.58 Å) and eight longer (2.63 Å) Ni–Ni bond lengths. In the third Ni site, Ni is bonded in a single-bond geometry to two equivalent Ho, five Ni, and one C atom. There are two shorter (2.45 Å) and two longer (2.50 Å) Ni–Ni bond lengths. The Ni–C bond length is 1.88 Å. In the fourth Ni site, Ni is bonded to three Ho and nine Ni atoms to form a mixture of distorted corner, edge, and face-sharing NiHo3Ni9 cuboctahedra. There are one shorter (2.31 Å) and two longer (2.37 Å) Ni–Ni bond lengths. C is bonded in a 5-coordinate geometry to one Ho and five Ni atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho2(Al3Pd)3 by Materials Project

Ho2(PdAl3)3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Ho is bonded in a 11-coordinate geometry to six Pd and eleven Al atoms. There are two shorter (3.44 Å) and four longer (3.47 Å) Ho–Pd bond lengths. There are a spread of Ho–Al bond distances ranging from 3.05–3.19 Å. There are two inequivalent Pd sites. In the first Pd site, Pd is bonded in a 8-coordinate geometry to four equivalent Ho and eight Al atoms. There are a spread of Pd–Al bond distances ranging from 2.56–2.66 Å. In the second Pd site, Pd is bonded in a 8-coordinate geometry to four equivalent Ho and eight Al atoms. There are a spread of Pd–Al bond distances ranging from 2.55–2.65 Å. There are four inequivalent Al sites. In the first Al site, Al is bonded in a 2-coordinate geometry to two equivalent Ho and two equivalent Pd atoms. In the second Al site, Al is bonded in a 3-coordinate geometry to three equivalent Ho, three Pd, and one Al atom. The Al–Al bond length is 2.86 Å. In the third Al site, Al is bonded in a 3-coordinate geometry to two equivalent Ho, three Pd, and five Al atoms. There are one shorter (2.80 Å) and two longer (2.84 Å) Al–Al bond lengths. In the fourth Al site, Al is bonded in a 2-coordinate geometry to two equivalent Ho, two equivalent Pd, and two equivalent Al atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho2NiGe6 by Materials Project

Ho2NiGe6 crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. there are two inequivalent Ho sites. In the first Ho site, Ho is bonded in a 4-coordinate geometry to four equivalent Ni and ten Ge atoms. All Ho–Ni bond lengths are 3.10 Å. There are a spread of Ho–Ge bond distances ranging from 3.04–3.37 Å. In the second Ho site, Ho is bonded in a 10-coordinate geometry to ten Ge atoms. There are a spread of Ho–Ge bond distances ranging from 2.96–3.17 Å. Ni is bonded in a 9-coordinate geometry to four equivalent Ho and five Ge atoms. There are a spread of Ni–Ge bond distances ranging from 2.30–2.37 Å. There are six inequivalent Ge sites. In the first Ge site, Ge is bonded in a 2-coordinate geometry to two equivalent Ho, two equivalent Ni, and five Ge atoms. There are one shorter (2.50 Å) and four longer (2.84 Å) Ge–Ge bond lengths. In the second Ge site, Ge is bonded in a 2-coordinate geometry to two equivalent Ho, two equivalent Ni, and five Ge atoms. The Ge–Ge bond length is 2.51 Å. In the third Ge site, Ge is bonded in a 7-coordinate geometry to two equivalent Ho and five Ge atoms. All Ge–Ge bond lengths are 2.84 Å. In the fourth Ge site, Ge is bonded in a 7-coordinate geometry to two equivalent Ho and five Ge atoms. In the fifth Ge site, Ge is bonded in a 8-coordinate geometry to six Ho and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.57 Å. In the sixth Ge site, Ge is bonded in a 1-coordinate geometry to six Ho, one Ni, and two equivalent Ge atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho5CoSb2 by Materials Project

Ho5CoSb2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are four inequivalent Ho sites. In the first Ho site, Ho is bonded to one Co and four equivalent Sb atoms to form a mixture of distorted corner, edge, and face-sharing HoCoSb4 trigonal bipyramids. The Ho–Co bond length is 2.69 Å. All Ho–Sb bond lengths are 3.14 Å. In the second Ho site, Ho is bonded to one Co and four equivalent Sb atoms to form a mixture of distorted corner, edge, and face-sharing HoCoSb4 trigonal bipyramids. The Ho–Co bond length is 2.99 Å. All Ho–Sb bond lengths are 3.10 Å. In the third Ho site, Ho is bonded to one Co and four equivalent Sb atoms to form a mixture of distorted corner and edge-sharing HoCoSb4 trigonal bipyramids. The Ho–Co bond length is 2.69 Å. There are two shorter (3.17 Å) and two longer (3.22 Å) Ho–Sb bond lengths. In the fourth Ho site, Ho is bonded in a 2-coordinate geometry to two equivalent Co and three equivalent Sb atoms. There are one shorter (2.74 Å) and one longer (2.84 Å) Ho–Co bond lengths. There are a spread of Ho–Sb bond distances ranging from 3.30–3.52 Å. Co is bonded to seven Ho atoms to form distorted edge-sharing CoHo7 pentagonal bipyramids. Sb is bonded in a 9-coordinate geometry to nine Ho atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho2B4C by Materials Project

Ho2B4C crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. Ho is bonded in a 2-coordinate geometry to six equivalent B and two equivalent C atoms. There are four shorter (2.72 Å) and two longer (2.97 Å) Ho–B bond lengths. Both Ho–C bond lengths are 2.40 Å. There are two inequivalent B sites. In the first B site, B is bonded in a 3-coordinate geometry to six equivalent Ho and three B atoms. There is one shorter (1.77 Å) and two longer (1.87 Å) B–B bond length. In the second B site, B is bonded in a distorted single-bond geometry to two equivalent B and one C atom. The B–C bond length is 1.50 Å. C is bonded to four equivalent Ho and two equivalent B atoms to form distorted edge-sharing CHo4B2 octahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho5CoBi2 by Materials Project

Ho5CoBi2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are four inequivalent Ho sites. In the first Ho site, Ho is bonded to one Co and four equivalent Bi atoms to form a mixture of distorted corner, edge, and face-sharing HoCoBi4 trigonal bipyramids. The Ho–Co bond length is 2.69 Å. All Ho–Bi bond lengths are 3.20 Å. In the second Ho site, Ho is bonded in a 5-coordinate geometry to one Co and four equivalent Bi atoms. The Ho–Co bond length is 2.66 Å. There are two shorter (3.24 Å) and two longer (3.28 Å) Ho–Bi bond lengths. In the third Ho site, Ho is bonded in a 2-coordinate geometry to two equivalent Co and three equivalent Bi atoms. There are one shorter (2.80 Å) and one longer (2.85 Å) Ho–Co bond lengths. There are a spread of Ho–Bi bond distances ranging from 3.36–3.53 Å. In the fourth Ho site, Ho is bonded to one Co and four equivalent Bi atoms to form a mixture of distorted corner, edge, and face-sharing HoCoBi4 trigonal bipyramids. The Ho–Co bond length is 2.98 Å. There are two shorter (3.15 Å) and two longer (3.19 Å) Ho–Bi bond lengths. Co is bonded to seven Ho atoms to form distorted edge-sharing CoHo7 pentagonal bipyramids. Bi is bonded in a 9-coordinate geometry to nine Ho atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho5Bi2Pd by Materials Project

Ho5PdBi2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are four inequivalent Ho sites. In the first Ho site, Ho is bonded in a 5-coordinate geometry to one Pd and four equivalent Bi atoms. The Ho–Pd bond length is 2.86 Å. There are two shorter (3.21 Å) and two longer (3.22 Å) Ho–Bi bond lengths. In the second Ho site, Ho is bonded to one Pd and four equivalent Bi atoms to form distorted edge-sharing HoBi4Pd square pyramids. The Ho–Pd bond length is 2.97 Å. There are two shorter (3.17 Å) and two longer (3.19 Å) Ho–Bi bond lengths. In the third Ho site, Ho is bonded in a 5-coordinate geometry to one Pd and four equivalent Bi atoms. The Ho–Pd bond length is 2.86 Å. There are two shorter (3.25 Å) and two longer (3.28 Å) Ho–Bi bond lengths. In the fourth Ho site, Ho is bonded in a 2-coordinate geometry to two equivalent Pd and three equivalent Bi atoms. There are one shorter (2.91 Å) and one longer (2.97 Å) Ho–Pd bond lengths. There are a spread of Ho–Bi bond distances ranging from 3.33–3.59 Å. Pd is bonded in a 7-coordinate geometry to seven Ho atoms. Bi is bonded in a 9-coordinate geometry to nine Ho atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho2Fe17C2 by Materials Project

Ho2Fe17C2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. Ho is bonded in a distorted bent 120 degrees geometry to nine Fe and two equivalent C atoms. There are a spread of Ho–Fe bond distances ranging from 3.05–3.35 Å. Both Ho–C bond lengths are 2.51 Å. There are seven inequivalent Fe sites. In the first Fe site, Fe is bonded in a 2-coordinate geometry to one Ho and thirteen Fe atoms. There are a spread of Fe–Fe bond distances ranging from 2.40–2.73 Å. In the second Fe site, Fe is bonded to three equivalent Ho and nine Fe atoms to form FeHo3Fe9 cuboctahedra that share corners with nine FeHo3Fe9 cuboctahedra, corners with four equivalent CHo2Fe4 octahedra, edges with four FeHo3Fe9 cuboctahedra, faces with four FeHo3Fe9 cuboctahedra, and faces with two equivalent CHo2Fe4 octahedra. The corner-sharing octahedra tilt angles range from 63–69°. There are a spread of Fe–Fe bond distances ranging from 2.47–2.63 Å. In the third Fe site, Fe is bonded in a single-bond geometry to five Fe and one C atom. There are two shorter (2.47 Å) and one longer (2.56 Å) Fe–Fe bond lengths. The Fe–C bond length is 1.91 Å. In the fourth Fe site, Fe is bonded in a 12-coordinate geometry to two equivalent Ho and ten Fe atoms. There are two shorter (2.43 Å) and two longer (2.46 Å) Fe–Fe bond lengths. In the fifth Fe site, Fe is bonded in a single-bond geometry to six Fe and one C atom. Both Fe–Fe bond lengths are 2.43 Å. The Fe–C bond length is 1.86 Å. In the sixth Fe site, Fe is bonded to two equivalent Ho and ten Fe atoms to form distorted FeHo2Fe10 cuboctahedra that share corners with ten FeHo3Fe9 cuboctahedra, edges with two equivalent FeHo3Fe9 cuboctahedra, faces with six FeHo3Fe9 cuboctahedra, and faces with four equivalent CHo2Fe4 octahedra. In the seventh Fe site, Fe is bonded to two equivalent Ho and ten Fe atoms to form FeHo2Fe10 cuboctahedra that share corners with six FeHo3Fe9 cuboctahedra, corners with two equivalent CHo2Fe4 octahedra, edges with two equivalent FeHo3Fe9 cuboctahedra, faces with six FeHo3Fe9 cuboctahedra, and faces with two equivalent CHo2Fe4 octahedra. The corner-sharing octahedral tilt angles are 45°. C is bonded to two equivalent Ho and four Fe atoms to form CHo2Fe4 octahedra that share corners with six FeHo3Fe9 cuboctahedra, corners with two equivalent CHo2Fe4 octahedra, and faces with six FeHo2Fe10 cuboctahedra. The corner-sharing octahedral tilt angles are 62°.

36 MATERIALS SCIENCE↗