Materials Data on BaSm2Ti3O10 by Materials Project

Abstract

BaSm2Ti3O10 is Pb(Zr_(1-x)Ti_x)O3-derived structured and crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Ba2+ is bonded in a 6-coordinate geometry to seven O2- atoms. There are a spread of Ba–O bond distances ranging from 2.71–3.25 Å. There are two inequivalent Sm3+ sites. In the first Sm3+ site, Sm3+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Sm–O bond distances ranging from 2.41–2.97 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 2.39–2.82 Å. There are two inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to six O2- atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedra tilt angles range from 0–32°. There are a spread of Ti–O bond distances ranging from 1.93–1.99 Å. In the second Ti4+ site, Ti4+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ti–O bond distances ranging from 1.77–2.30 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Sm3+ and two Ti4+ atoms. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent Ba2+ and one Ti4+ atom. In the third O2- site, O2- is bonded in a 4-coordinate geometry to two Sm3+ and two equivalent Ti4+ atoms. In the fourth O2- site, O2- is bonded in a distorted linear geometry to four Sm3+ and two equivalent Ti4+ atoms. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Sm3+ and two equivalent Ti4+ atoms. In the sixth O2- site, O2- is bonded to two equivalent Sm3+ and two equivalent Ti4+ atoms to form distorted corner-sharing OSm2Ti2 tetrahedra. In the seventh O2- site, O2- is bonded in a distorted linear geometry to one Ba2+, two equivalent Sm3+, and two equivalent Ti4+ atoms.