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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Sm2Mg by Materials Project

MgSm2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Mg is bonded in a body-centered cubic geometry to eight Sm atoms. There are a spread of Mg–Sm bond distances ranging from 3.33–3.39 Å. There are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a 12-coordinate geometry to six equivalent Mg and four equivalent Sm atoms. There are two shorter (3.68 Å) and two longer (3.69 Å) Sm–Sm bond lengths. In the second Sm site, Sm is bonded in a 12-coordinate geometry to two equivalent Mg and ten Sm atoms. There are four shorter (3.46 Å) and two longer (3.77 Å) Sm–Sm bond lengths.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm2Mg by Materials Project

MgSm2 crystallizes in the tetragonal I4/mmm space group. The structure is two-dimensional and consists of two MgSm2 sheets oriented in the (0, 0, 1) direction. Mg is bonded in a body-centered cubic geometry to eight equivalent Sm atoms. All Mg–Sm bond lengths are 3.35 Å. Sm is bonded in a 8-coordinate geometry to four equivalent Mg atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm2Mg by Materials Project

MgSm2 crystallizes in the monoclinic C2/m space group. The structure is two-dimensional and consists of two MgSm2 sheets oriented in the (1, 0, 0) direction. Mg is bonded in a body-centered cubic geometry to eight Sm atoms. There are a spread of Mg–Sm bond distances ranging from 3.35–3.38 Å. There are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a 12-coordinate geometry to four equivalent Mg atoms. In the second Sm site, Sm is bonded in a 12-coordinate geometry to four equivalent Mg atoms.

36 MATERIALS SCIENCE↗