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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on EuErO3 by Materials Project

ErEuO3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Er3+ is bonded to six equivalent O2- atoms to form ErO6 octahedra that share corners with six equivalent ErO6 octahedra and faces with eight equivalent EuO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Er–O bond lengths are 2.15 Å. 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 ErO6 octahedra. All Eu–O bond lengths are 3.04 Å. O2- is bonded in a linear geometry to two equivalent Er3+ and four equivalent Eu3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on EuEr2O4 by Materials Project

Er2EuO4 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Er3+ sites. In the first Er3+ site, Er3+ is bonded to six O2- atoms to form a mixture of corner and edge-sharing ErO6 octahedra. The corner-sharing octahedra tilt angles range from 50–64°. There are a spread of Er–O bond distances ranging from 2.20–2.35 Å. In the second Er3+ site, Er3+ is bonded to six O2- atoms to form a mixture of corner and edge-sharing ErO6 octahedra. The corner-sharing octahedra tilt angles range from 50–64°. There are a spread of Er–O bond distances ranging from 2.24–2.32 Å. Eu2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Eu–O bond distances ranging from 2.58–2.86 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded to three equivalent Er3+ and two equivalent Eu2+ atoms to form a mixture of distorted corner and edge-sharing OEu2Er3 trigonal bipyramids. In the second O2- site, O2- is bonded to three equivalent Er3+ and two equivalent Eu2+ atoms to form a mixture of corner and edge-sharing OEu2Er3 square pyramids. In the third O2- site, O2- is bonded in a 5-coordinate geometry to three Er3+ and two equivalent Eu2+ atoms. In the fourth O2- site, O2- is bonded in a 5-coordinate geometry to three Er3+ and two equivalent Eu2+ atoms.

36 MATERIALS SCIENCE↗