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DOE OSTI2020

Materials Data on EuGaO3 by Materials Project

EuGaO3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Eu3+ is bonded in a 8-coordinate geometry to six equivalent O2- atoms. All Eu–O bond lengths are 2.35 Å. Ga3+ is bonded to five O2- atoms to form corner-sharing GaO5 trigonal bipyramids. There are two shorter (1.88 Å) and three longer (2.12 Å) Ga–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to three equivalent Ga3+ atoms. In the second O2- site, O2- is bonded to three equivalent Eu3+ and one Ga3+ atom to form a mixture of corner and edge-sharing OEu3Ga tetrahedra.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on EuGaO3 by Materials Project

EuGaO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Eu3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Eu–O bond distances ranging from 2.35–2.68 Å. Ga3+ is bonded to six O2- atoms to form corner-sharing GaO6 octahedra. The corner-sharing octahedral tilt angles are 29°. There are a spread of Ga–O bond distances ranging from 1.99–2.04 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 5-coordinate geometry to three equivalent Eu3+ and two equivalent Ga3+ atoms. In the second O2- site, O2- is bonded to two equivalent Eu3+ and two equivalent Ga3+ atoms to form distorted corner-sharing OEu2Ga2 tetrahedra.

36 MATERIALS SCIENCE↗