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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on EuAlO3 by Materials Project

EuAlO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Eu3+ is bonded in a 12-coordinate geometry to twelve O2- atoms. There are a spread of Eu–O bond distances ranging from 2.44–2.98 Å. Al3+ is bonded to six O2- atoms to form corner-sharing AlO6 octahedra. The corner-sharing octahedra tilt angles range from 14–16°. All Al–O bond lengths are 1.90 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to four equivalent Eu3+ and two equivalent Al3+ atoms. In the second O2- site, O2- is bonded in a 5-coordinate geometry to four equivalent Eu3+ and two equivalent Al3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on EuAlO3 by Materials Project

EuAlO3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Eu3+ is bonded to twelve equivalent O2- atoms to form EuO12 cuboctahedra that share corners with twelve equivalent EuO12 cuboctahedra, faces with six equivalent EuO12 cuboctahedra, and faces with eight equivalent AlO6 octahedra. All Eu–O bond lengths are 2.66 Å. Al3+ is bonded to six equivalent O2- atoms to form AlO6 octahedra that share corners with six equivalent AlO6 octahedra and faces with eight equivalent EuO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Al–O bond lengths are 1.88 Å. O2- is bonded in a distorted linear geometry to four equivalent Eu3+ and two equivalent Al3+ atoms.

36 MATERIALS SCIENCE↗