Materials Data on TbErO3 by Materials Project
ErTbO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Er3+ is bonded to six O2- atoms to form corner-sharing ErO6 octahedra. The corner-sharing octahedra tilt angles range from 45–48°. There are a spread of Er–O bond distances ranging from 2.21–2.30 Å. Tb3+ is bonded in a 4-coordinate geometry to six O2- atoms. There are a spread of Tb–O bond distances ranging from 2.24–2.73 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Er3+ and two equivalent Tb3+ atoms to form distorted corner-sharing OTb2Er2 trigonal pyramids. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Er3+ and two equivalent Tb3+ atoms.