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DOE OSTI · 1194387

Materials Data on Al2O3 by Materials Project

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Abstract

Al2O3 is Corundum-like structured and crystallizes in the orthorhombic Pbcn space group. The structure is three-dimensional. Al3+ is bonded to six O2- atoms to form a mixture of face, edge, and corner-sharing AlO6 octahedra. The corner-sharing octahedra tilt angles range from 51–71°. There are a spread of Al–O bond distances ranging from 1.87–2.03 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Al3+ atoms to form a mixture of distorted edge and corner-sharing OAl4 tetrahedra. In the second O2- site, O2- is bonded to four equivalent Al3+ atoms to form a mixture of distorted edge and corner-sharing OAl4 trigonal pyramids.

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36 MATERIALS SCIENCEAl-OAl2O3crystal structure

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2020-07-17. Materials Data on Al2O3 by Materials Project. https://doi.org/10.17188/1194387

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