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Materials Data on ZrUO4 by Materials Project

UO2ZrO2 is Fluorite-derived structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. U4+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are six shorter (2.32 Å) and two longer (2.35 Å) U–O bond lengths. Zr4+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are two shorter (2.22 Å) and six longer (2.28 Å) Zr–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to three equivalent U4+ and one Zr4+ atom to form a mixture of edge and corner-sharing OZrU3 tetrahedra. In the second O2- site, O2- is bonded to one U4+ and three equivalent Zr4+ atoms to form a mixture of edge and corner-sharing OZr3U tetrahedra.

36 MATERIALS SCIENCE↗