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Materials Data on Ca3Mg by Materials Project

Dataset ·
DOI:https://doi.org/10.17188/1685093· OSTI ID:1685093
MgCa3 crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. there are two inequivalent Ca sites. In the first Ca site, Ca is bonded to twelve Ca atoms to form a mixture of corner, edge, and face-sharing CaCa12 cuboctahedra. There are six shorter (3.82 Å) and six longer (3.92 Å) Ca–Ca bond lengths. In the second Ca site, Ca is bonded to three equivalent Ca and three equivalent Mg atoms to form distorted CaCa3Mg3 cuboctahedra that share corners with eighteen CaCa12 cuboctahedra, edges with twelve CaCa12 cuboctahedra, and faces with two equivalent CaCa3Mg3 cuboctahedra. All Ca–Mg bond lengths are 3.52 Å. Mg is bonded in a 6-coordinate geometry to six equivalent Ca atoms.
Research Organization:
LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Contributing Organization:
The Materials Project; MIT; UC Berkeley; Duke; U Louvain
DOE Contract Number:
AC02-05CH11231
OSTI ID:
1685093
Report Number(s):
mp-1039142
Country of Publication:
United States
Language:
English

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