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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on AlTeO4 by Materials Project

AlTeO4 is Hydrophilite-derived structured and crystallizes in the orthorhombic Pbcn space group. The structure is three-dimensional. Al is bonded to six O atoms to form AlO6 octahedra that share corners with six equivalent TeO6 octahedra, an edgeedge with one TeO6 octahedra, and edges with two equivalent AlO6 octahedra. The corner-sharing octahedra tilt angles range from 49–56°. There are a spread of Al–O bond distances ranging from 1.90–1.93 Å. Te is bonded to six O atoms to form TeO6 octahedra that share corners with four equivalent TeO6 octahedra, corners with six equivalent AlO6 octahedra, and an edgeedge with one AlO6 octahedra. The corner-sharing octahedra tilt angles range from 48–56°. There are a spread of Te–O bond distances ranging from 2.03–2.13 Å. There are two inequivalent O sites. In the first O site, O is bonded in a distorted trigonal planar geometry to one Al and two equivalent Te atoms. In the second O site, O is bonded in a distorted trigonal planar geometry to two equivalent Al and one Te atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Al2Te4O11 by Materials Project

Al2Te4O11 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Al3+ is bonded to six O2- atoms to form edge-sharing AlO6 octahedra. There are a spread of Al–O bond distances ranging from 1.89–1.97 Å. There are two inequivalent Te4+ sites. In the first Te4+ site, Te4+ is bonded in a distorted see-saw-like geometry to four O2- atoms. There are a spread of Te–O bond distances ranging from 1.90–2.64 Å. In the second Te4+ site, Te4+ is bonded in a 3-coordinate geometry to three O2- atoms. There is one shorter (1.88 Å) and two longer (1.94 Å) Te–O bond length. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to one Al3+ and one Te4+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Al3+ and one Te4+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to one Al3+ and one Te4+ atom. In the fourth O2- site, O2- is bonded in a linear geometry to two equivalent Te4+ atoms. In the fifth O2- site, O2- is bonded in a distorted water-like geometry to one Al3+ and two Te4+ atoms. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Al3+ and one Te4+ atom.

36 MATERIALS SCIENCE↗