Materials Data on La4Ti3O12 by Materials Project

Abstract

La4Ti3O12 crystallizes in the trigonal R-3 space group. The structure is three-dimensional. there are two inequivalent La3+ sites. In the first La3+ site, La3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of La–O bond distances ranging from 2.42–2.96 Å. In the second La3+ site, La3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of La–O bond distances ranging from 2.45–2.84 Å. There are two inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to six equivalent O2- atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles are 21°. All Ti–O bond lengths are 1.98 Å. In the second Ti4+ site, Ti4+ is bonded to six O2- atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles are 21°. There are three shorter (1.88 Å) and three longer (2.12 Å) Ti–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to three La3+ and one Ti4+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to three La3+ and two Ti4+ atoms.