Materials Data on FeBiO3 by Materials Project
BiFeO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Fe3+ is bonded to six O2- atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles are 32°. There are four shorter (2.06 Å) and two longer (2.07 Å) Fe–O bond lengths. Bi3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Bi–O bond distances ranging from 2.30–2.74 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Fe3+ and two equivalent Bi3+ atoms to form distorted corner-sharing OFe2Bi2 tetrahedra. In the second O2- site, O2- is bonded in a 5-coordinate geometry to two equivalent Fe3+ and three equivalent Bi3+ atoms.