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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on SrMgSn by Materials Project

MgSnSr crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Sr is bonded in a 5-coordinate geometry to six equivalent Mg and five equivalent Sn atoms. There are a spread of Sr–Mg bond distances ranging from 3.53–3.89 Å. There are a spread of Sr–Sn bond distances ranging from 3.44–3.51 Å. Mg is bonded in a 4-coordinate geometry to six equivalent Sr and four equivalent Sn atoms. There are a spread of Mg–Sn bond distances ranging from 2.98–3.10 Å. Sn is bonded in a 9-coordinate geometry to five equivalent Sr and four equivalent Mg atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on SrMgSn by Materials Project

MgSnSr is half-Heusler structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Sr is bonded in a body-centered cubic geometry to four equivalent Mg and four equivalent Sn atoms. All Sr–Mg bond lengths are 3.30 Å. All Sr–Sn bond lengths are 3.30 Å. Mg is bonded to four equivalent Sr atoms to form MgSr4 tetrahedra that share corners with four equivalent SnSr4 tetrahedra, corners with twelve equivalent MgSr4 tetrahedra, and edges with six equivalent SnSr4 tetrahedra. Sn is bonded to four equivalent Sr atoms to form SnSr4 tetrahedra that share corners with four equivalent MgSr4 tetrahedra, corners with twelve equivalent SnSr4 tetrahedra, and edges with six equivalent MgSr4 tetrahedra.

36 MATERIALS SCIENCE↗