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DOE OSTI · 1686555

Materials Data on SrMn7O12 by Materials Project

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Abstract

SrMn7O12 crystallizes in the cubic Im-3 space group. The structure is three-dimensional. Sr2+ is bonded to twelve equivalent O2- atoms to form SrO12 cuboctahedra that share faces with eight equivalent MnO6 octahedra. All Sr–O bond lengths are 2.71 Å. There are two inequivalent Mn+3.14+ sites. In the first Mn+3.14+ site, Mn+3.14+ is bonded in a square co-planar geometry to four equivalent O2- atoms. All Mn–O bond lengths are 1.97 Å. In the second Mn+3.14+ site, Mn+3.14+ is bonded to six equivalent O2- atoms to form MnO6 octahedra that share corners with six equivalent MnO6 octahedra and faces with two equivalent SrO12 cuboctahedra. The corner-sharing octahedral tilt angles are 41°. All Mn–O bond lengths are 2.01 Å. O2- is bonded in a 3-coordinate geometry to one Sr2+ and three Mn+3.14+ atoms.

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36 MATERIALS SCIENCEcrystal structureMn-O-SrSrMn7O12

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2020-05-02. Materials Data on SrMn7O12 by Materials Project. https://doi.org/10.17188/1686555

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