Materials Data on SrTbO3 by Materials Project
SrTbO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.52–3.13 Å. Tb4+ is bonded to six O2- atoms to form corner-sharing TbO6 octahedra. The corner-sharing octahedra tilt angles range from 34–39°. There are four shorter (2.27 Å) and two longer (2.28 Å) Tb–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 5-coordinate geometry to three equivalent Sr2+ and two equivalent Tb4+ atoms. In the second O2- site, O2- is bonded to two equivalent Sr2+ and two equivalent Tb4+ atoms to form distorted corner-sharing OSr2Tb2 tetrahedra.