Materials Data on Ho2V2O7 by Materials Project

Abstract

Ho2V2O7 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Ho3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are two shorter (2.19 Å) and six longer (2.46 Å) Ho–O bond lengths. V4+ is bonded to six equivalent O2- atoms to form corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles are 50°. All V–O bond lengths are 1.97 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Ho3+ atoms to form corner-sharing OHo4 tetrahedra. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Ho3+ and two equivalent V4+ atoms.