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DOE OSTI · 1206986

Materials Data on MgAl2O4 by Materials Project

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Abstract

MgAl2O4 is Spinel structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Mg2+ is bonded to four equivalent O2- atoms to form MgO4 tetrahedra that share corners with twelve equivalent AlO6 octahedra. The corner-sharing octahedral tilt angles are 59°. All Mg–O bond lengths are 1.96 Å. Al3+ is bonded to six equivalent O2- atoms to form AlO6 octahedra that share corners with six equivalent MgO4 tetrahedra and edges with six equivalent AlO6 octahedra. All Al–O bond lengths are 1.94 Å. O2- is bonded to one Mg2+ and three equivalent Al3+ atoms to form a mixture of distorted corner and edge-sharing OMgAl3 trigonal pyramids.

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36 MATERIALS SCIENCEAl-Mg-Ocrystal structureMgAl2O4

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2020-07-14. Materials Data on MgAl2O4 by Materials Project. https://doi.org/10.17188/1206986

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