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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on TmMgAu2 by Materials Project

MgTmAu2 is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Mg is bonded in a body-centered cubic geometry to eight equivalent Au atoms. All Mg–Au bond lengths are 2.98 Å. Tm is bonded in a body-centered cubic geometry to eight equivalent Au atoms. All Tm–Au bond lengths are 2.98 Å. Au is bonded in a body-centered cubic geometry to four equivalent Mg and four equivalent Tm atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TmMgAu by Materials Project

MgTmAu crystallizes in the hexagonal P-62m space group. The structure is three-dimensional. Mg is bonded to four Au atoms to form a mixture of distorted edge and corner-sharing MgAu4 tetrahedra. There are two shorter (2.77 Å) and two longer (2.90 Å) Mg–Au bond lengths. Tm is bonded in a 5-coordinate geometry to five Au atoms. There are four shorter (3.06 Å) and one longer (3.10 Å) Tm–Au bond lengths. There are two inequivalent Au sites. In the first Au site, Au is bonded in a 9-coordinate geometry to six equivalent Mg and three equivalent Tm atoms. In the second Au site, Au is bonded in a 9-coordinate geometry to three equivalent Mg and six equivalent Tm atoms.

36 MATERIALS SCIENCE↗