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Materials Data on TmNbO4 by Materials Project

TmNbO4 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Tm3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Tm–O bond distances ranging from 2.29–2.40 Å. Nb5+ is bonded in a 4-coordinate geometry to six O2- atoms. There are a spread of Nb–O bond distances ranging from 1.88–2.45 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Tm3+ and one Nb5+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Tm3+ and two equivalent Nb5+ atoms.

36 MATERIALS SCIENCE↗