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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on SmHo3 by Materials Project

Ho3Sm is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Ho sites. In the first Ho site, Ho is bonded to eight Ho and four equivalent Sm atoms to form HoSm4Ho8 cuboctahedra that share corners with twelve equivalent HoSm4Ho8 cuboctahedra, edges with eight equivalent SmHo12 cuboctahedra, edges with sixteen HoSm4Ho8 cuboctahedra, faces with four equivalent SmHo12 cuboctahedra, and faces with fourteen HoSm4Ho8 cuboctahedra. All Ho–Ho bond lengths are 3.55 Å. All Ho–Sm bond lengths are 3.55 Å. In the second Ho site, Ho is bonded to eight equivalent Ho and four equivalent Sm atoms to form HoSm4Ho8 cuboctahedra that share corners with four equivalent HoSm4Ho8 cuboctahedra, corners with eight equivalent SmHo12 cuboctahedra, edges with twenty-four HoSm4Ho8 cuboctahedra, faces with six equivalent SmHo12 cuboctahedra, and faces with twelve HoSm4Ho8 cuboctahedra. All Ho–Sm bond lengths are 3.55 Å. Sm is bonded to twelve Ho atoms to form SmHo12 cuboctahedra that share corners with four equivalent SmHo12 cuboctahedra, corners with eight equivalent HoSm4Ho8 cuboctahedra, edges with eight equivalent SmHo12 cuboctahedra, edges with sixteen equivalent HoSm4Ho8 cuboctahedra, faces with four equivalent SmHo12 cuboctahedra, and faces with fourteen HoSm4Ho8 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm3Ho by Materials Project

HoSm3 is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ho is bonded to twelve Sm atoms to form HoSm12 cuboctahedra that share corners with four equivalent HoSm12 cuboctahedra, corners with eight equivalent SmSm8Ho4 cuboctahedra, edges with eight equivalent HoSm12 cuboctahedra, edges with sixteen equivalent SmSm8Ho4 cuboctahedra, faces with four equivalent HoSm12 cuboctahedra, and faces with fourteen SmSm8Ho4 cuboctahedra. All Ho–Sm bond lengths are 3.60 Å. There are two inequivalent Sm sites. In the first Sm site, Sm is bonded to four equivalent Ho and eight Sm atoms to form SmSm8Ho4 cuboctahedra that share corners with twelve equivalent SmSm8Ho4 cuboctahedra, edges with eight equivalent HoSm12 cuboctahedra, edges with sixteen SmSm8Ho4 cuboctahedra, faces with four equivalent HoSm12 cuboctahedra, and faces with fourteen SmSm8Ho4 cuboctahedra. All Sm–Sm bond lengths are 3.60 Å. In the second Sm site, Sm is bonded to four equivalent Ho and eight equivalent Sm atoms to form SmSm8Ho4 cuboctahedra that share corners with four equivalent SmSm8Ho4 cuboctahedra, corners with eight equivalent HoSm12 cuboctahedra, edges with twenty-four SmSm8Ho4 cuboctahedra, faces with six equivalent HoSm12 cuboctahedra, and faces with twelve SmSm8Ho4 cuboctahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm3Ho by Materials Project

HoSm3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Ho is bonded to twelve equivalent Sm atoms to form HoSm12 cuboctahedra that share corners with twelve equivalent HoSm12 cuboctahedra, edges with twenty-four equivalent SmSm8Ho4 cuboctahedra, faces with six equivalent HoSm12 cuboctahedra, and faces with twelve equivalent SmSm8Ho4 cuboctahedra. All Ho–Sm bond lengths are 3.60 Å. Sm is bonded to four equivalent Ho and eight equivalent Sm atoms to form SmSm8Ho4 cuboctahedra that share corners with twelve equivalent SmSm8Ho4 cuboctahedra, edges with eight equivalent HoSm12 cuboctahedra, edges with sixteen equivalent SmSm8Ho4 cuboctahedra, faces with four equivalent HoSm12 cuboctahedra, and faces with fourteen equivalent SmSm8Ho4 cuboctahedra. All Sm–Sm bond lengths are 3.60 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm3Ho by Materials Project

HoSm3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Ho is bonded to twelve equivalent Sm atoms to form HoSm12 cuboctahedra that share corners with six equivalent HoSm12 cuboctahedra, corners with twelve equivalent SmSm8Ho4 cuboctahedra, edges with eighteen equivalent SmSm8Ho4 cuboctahedra, faces with eight equivalent HoSm12 cuboctahedra, and faces with twelve equivalent SmSm8Ho4 cuboctahedra. There are six shorter (3.58 Å) and six longer (3.65 Å) Ho–Sm bond lengths. Sm is bonded to four equivalent Ho and eight equivalent Sm atoms to form SmSm8Ho4 cuboctahedra that share corners with four equivalent HoSm12 cuboctahedra, corners with fourteen equivalent SmSm8Ho4 cuboctahedra, edges with six equivalent HoSm12 cuboctahedra, edges with twelve equivalent SmSm8Ho4 cuboctahedra, faces with four equivalent HoSm12 cuboctahedra, and faces with sixteen equivalent SmSm8Ho4 cuboctahedra. There are a spread of Sm–Sm bond distances ranging from 3.58–3.65 Å.

36 MATERIALS SCIENCE↗