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DOE OSTI · 1195087

Materials Data on Mg3As2 by Materials Project

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Abstract

Mg3As2 is Spinel-derived structured and crystallizes in the cubic Ia-3 space group. The structure is three-dimensional. Mg2+ is bonded to four As3- atoms to form a mixture of edge and corner-sharing MgAs4 tetrahedra. There are a spread of Mg–As bond distances ranging from 2.63–2.74 Å. There are two inequivalent As3- sites. In the first As3- site, As3- is bonded to six equivalent Mg2+ atoms to form a mixture of distorted edge and corner-sharing AsMg6 octahedra. The corner-sharing octahedra tilt angles range from 59–60°. In the second As3- site, As3- is bonded to six equivalent Mg2+ atoms to form a mixture of distorted edge and corner-sharing AsMg6 octahedra. The corner-sharing octahedral tilt angles are 60°.

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36 MATERIALS SCIENCEAs-Mgcrystal structureMg3As2

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2020-04-30. Materials Data on Mg3As2 by Materials Project. https://doi.org/10.17188/1195087

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