Materials Data on Ce9YO20 by Materials Project

Abstract

Ce9YO20 is Fluorite-derived structured and crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are five inequivalent Ce sites. In the first Ce site, Ce is bonded in a body-centered cubic geometry to eight O atoms. There are a spread of Ce–O bond distances ranging from 2.34–2.37 Å. In the second Ce site, Ce is bonded in a body-centered cubic geometry to eight O atoms. There are a spread of Ce–O bond distances ranging from 2.35–2.38 Å. In the third Ce site, Ce is bonded in a body-centered cubic geometry to eight O atoms. All Ce–O bond lengths are 2.36 Å. In the fourth Ce site, Ce is bonded in a body-centered cubic geometry to eight O atoms. There are a spread of Ce–O bond distances ranging from 2.34–2.37 Å. In the fifth Ce site, Ce is bonded in a body-centered cubic geometry to eight O atoms. There are a spread of Ce–O bond distances ranging from 2.34–2.37 Å. Y is bonded in a body-centered cubic geometry to eight O atoms. All Y–O bond lengths are 2.38 Å. There are ten inequivalent O sites. In the first O site, O is bonded to four Ce atoms to form OCe4 tetrahedra that share corners with sixteen OCe3Y tetrahedra and edges with six OCe4 tetrahedra. In the second O site, O is bonded to three Ce and one Y atom to form OCe3Y tetrahedra that share corners with sixteen OCe4 tetrahedra and edges with six OCe3Y tetrahedra. In the third O site, O is bonded to four Ce atoms to form a mixture of edge and corner-sharing OCe4 tetrahedra. In the fourth O site, O is bonded to three Ce and one Y atom to form OCe3Y tetrahedra that share corners with sixteen OCe4 tetrahedra and edges with six OCe3Y tetrahedra. In the fifth O site, O is bonded to four Ce atoms to form a mixture of edge and corner-sharing OCe4 tetrahedra. In the sixth O site, O is bonded to four Ce atoms to form a mixture of edge and corner-sharing OCe4 tetrahedra. In the seventh O site, O is bonded to three Ce and one Y atom to form OCe3Y tetrahedra that share corners with sixteen OCe4 tetrahedra and edges with six OCe3Y tetrahedra. In the eighth O site, O is bonded to four Ce atoms to form OCe4 tetrahedra that share corners with sixteen OCe4 tetrahedra and edges with six OCe3Y tetrahedra. In the ninth O site, O is bonded to three Ce and one Y atom to form a mixture of edge and corner-sharing OCe3Y tetrahedra. In the tenth O site, O is bonded to four Ce atoms to form a mixture of edge and corner-sharing OCe4 tetrahedra.