Materials Data on ErNiO3 by Materials Project

Abstract

ErNiO3 is Orthorhombic Perovskite structured and crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Er3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Er–O bond distances ranging from 2.23–2.62 Å. There are two inequivalent Ni3+ sites. In the first Ni3+ site, Ni3+ is bonded to six O2- atoms to form corner-sharing NiO6 octahedra. The corner-sharing octahedra tilt angles range from 34–35°. There are a spread of Ni–O bond distances ranging from 1.98–2.05 Å. In the second Ni3+ site, Ni3+ is bonded to six O2- atoms to form corner-sharing NiO6 octahedra. The corner-sharing octahedra tilt angles range from 34–35°. There are a spread of Ni–O bond distances ranging from 1.91–1.97 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Er3+ and two Ni3+ atoms to form distorted corner-sharing OEr2Ni2 trigonal pyramids. In the second O2- site, O2- is bonded in a 5-coordinate geometry to three equivalent Er3+ and two Ni3+ atoms. In the third O2- site, O2- is bonded in a 5-coordinate geometry to three equivalent Er3+ and two Ni3+ atoms.