Materials Data on LaSm3(FeO3)4 by Materials Project

Abstract

Sm3La(FeO3)4 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic Pm space group. The structure is three-dimensional. there are three inequivalent Sm3+ sites. In the first Sm3+ site, Sm3+ is bonded in a 4-coordinate geometry to eight O2- atoms. There are a spread of Sm–O bond distances ranging from 2.32–2.78 Å. In the second Sm3+ site, Sm3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sm–O bond distances ranging from 2.32–2.72 Å. In the third Sm3+ site, Sm3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sm–O bond distances ranging from 2.32–2.71 Å. La3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of La–O bond distances ranging from 2.39–2.78 Å. There are two inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded to six O2- atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 30–34°. There are a spread of Fe–O bond distances ranging from 2.03–2.07 Å. In the second Fe3+ site, Fe3+ is bonded to six O2- atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedra tilt angles range from 28–34°. There are a spread of Fe–O bond distances ranging from 2.02–2.08 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a 5-coordinate geometry to two Sm3+, one La3+, and two Fe3+ atoms. In the second O2- site, O2- is bonded in a 5-coordinate geometry to two Sm3+, one La3+, and two Fe3+ atoms. In the third O2- site, O2- is bonded in a 5-coordinate geometry to three Sm3+ and two Fe3+ atoms. In the fourth O2- site, O2- is bonded in a 5-coordinate geometry to two Sm3+, one La3+, and two Fe3+ atoms. In the fifth O2- site, O2- is bonded to one Sm3+, one La3+, and two equivalent Fe3+ atoms to form distorted corner-sharing OLaSmFe2 tetrahedra. In the sixth O2- site, O2- is bonded to one Sm3+, one La3+, and two equivalent Fe3+ atoms to form distorted corner-sharing OLaSmFe2 tetrahedra. In the seventh O2- site, O2- is bonded to two Sm3+ and two equivalent Fe3+ atoms to form distorted corner-sharing OSm2Fe2 tetrahedra. In the eighth O2- site, O2- is bonded to two Sm3+ and two equivalent Fe3+ atoms to form distorted corner-sharing OSm2Fe2 tetrahedra.