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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Ge(TeO3)2 by Materials Project

Ge(TeO3)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Ge4+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of Ge–O bond distances ranging from 1.91–1.93 Å. Te4+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of Te–O bond distances ranging from 1.91–1.93 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to one Ge4+ and one Te4+ atom. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one Ge4+ and one Te4+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one Ge4+ and one Te4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ge3(TeO6)2 by Materials Project

Ge3(TeO6)2 crystallizes in the cubic Ia-3d space group. The structure is three-dimensional. Ge4+ is bonded to four equivalent O2- atoms to form GeO4 tetrahedra that share corners with four equivalent TeO6 octahedra. The corner-sharing octahedral tilt angles are 47°. All Ge–O bond lengths are 1.78 Å. Te6+ is bonded to six equivalent O2- atoms to form TeO6 octahedra that share corners with six equivalent GeO4 tetrahedra. All Te–O bond lengths are 1.95 Å. O2- is bonded in a distorted bent 120 degrees geometry to one Ge4+ and one Te6+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on GeTeO3 by Materials Project

GeTeO3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Ge2+ is bonded to six equivalent O2- atoms to form GeO6 octahedra that share corners with six equivalent GeO6 octahedra and faces with eight equivalent TeO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Ge–O bond lengths are 1.95 Å. Te4+ is bonded to twelve equivalent O2- atoms to form TeO12 cuboctahedra that share corners with twelve equivalent TeO12 cuboctahedra, faces with six equivalent TeO12 cuboctahedra, and faces with eight equivalent GeO6 octahedra. All Te–O bond lengths are 2.76 Å. O2- is bonded in a distorted linear geometry to two equivalent Ge2+ and four equivalent Te4+ atoms.

36 MATERIALS SCIENCE↗