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DOE OSTI · 1342473

Materials Data on Pm2O3 by Materials Project

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Abstract

Pm2O3 is Corundum-like structured and crystallizes in the cubic Ia-3 space group. The structure is three-dimensional. there are two inequivalent Pm3+ sites. In the first Pm3+ site, Pm3+ is bonded to six equivalent O2- atoms to form a mixture of distorted edge and corner-sharing PmO6 octahedra. The corner-sharing octahedra tilt angles range from 55–57°. There are a spread of Pm–O bond distances ranging from 2.35–2.44 Å. In the second Pm3+ site, Pm3+ is bonded to six equivalent O2- atoms to form a mixture of distorted edge and corner-sharing PmO6 octahedra. The corner-sharing octahedral tilt angles are 57°. All Pm–O bond lengths are 2.39 Å. O2- is bonded to four Pm3+ atoms to form a mixture of distorted edge and corner-sharing OPm4 trigonal pyramids.

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36 MATERIALS SCIENCEcrystal structureO-PmPm2O3

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2020-07-15. Materials Data on Pm2O3 by Materials Project. https://doi.org/10.17188/1342473

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