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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Ho2WO6 by Materials Project

Ho2WO6 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. there are two inequivalent Ho3+ sites. In the first Ho3+ site, Ho3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ho–O bond distances ranging from 2.23–2.58 Å. In the second Ho3+ site, Ho3+ is bonded to seven O2- atoms to form distorted HoO7 hexagonal pyramids that share corners with three equivalent WO6 octahedra, edges with two equivalent HoO7 hexagonal pyramids, and edges with two equivalent WO6 octahedra. The corner-sharing octahedra tilt angles range from 39–46°. There are a spread of Ho–O bond distances ranging from 2.29–2.40 Å. W6+ is bonded to six O2- atoms to form WO6 octahedra that share corners with three equivalent HoO7 hexagonal pyramids and edges with two equivalent HoO7 hexagonal pyramids. There are a spread of W–O bond distances ranging from 1.89–2.03 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to two equivalent Ho3+ and one W6+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two Ho3+ and one W6+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two Ho3+ and one W6+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to two Ho3+ and one W6+ atom. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to three Ho3+ and one W6+ atom. In the sixth O2- site, O2- is bonded to three Ho3+ and one W6+ atom to form distorted corner-sharing OHo3W tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho2WO6 by Materials Project

Ho2WO6 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are three inequivalent Ho3+ sites. In the first Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ho–O bond distances ranging from 2.21–2.77 Å. In the second Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ho–O bond distances ranging from 2.27–2.46 Å. In the third Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ho–O bond distances ranging from 2.18–2.62 Å. W6+ is bonded in a distorted trigonal bipyramidal geometry to five O2- atoms. There are a spread of W–O bond distances ranging from 1.84–2.11 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Ho3+ and one W6+ atom. In the second O2- site, O2- is bonded to four Ho3+ atoms to form a mixture of corner and edge-sharing OHo4 tetrahedra. In the third O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two equivalent Ho3+ and one W6+ atom. In the fourth O2- site, O2- is bonded to three Ho3+ and one W6+ atom to form a mixture of corner and edge-sharing OHo3W tetrahedra. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Ho3+ and one W6+ atom. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to three Ho3+ and one W6+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho2WO6 by Materials Project

Ho2WO6 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. there are four inequivalent Ho3+ sites. In the first Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ho–O bond distances ranging from 2.24–2.78 Å. In the second Ho3+ site, Ho3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Ho–O bond distances ranging from 2.22–2.44 Å. In the third Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ho–O bond distances ranging from 2.23–2.74 Å. In the fourth Ho3+ site, Ho3+ is bonded in a 4-coordinate geometry to six O2- atoms. There are a spread of Ho–O bond distances ranging from 2.21–2.60 Å. There are two inequivalent W6+ sites. In the first W6+ site, W6+ is bonded in a distorted octahedral geometry to six O2- atoms. There are a spread of W–O bond distances ranging from 1.87–2.15 Å. In the second W6+ site, W6+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of W–O bond distances ranging from 1.92–2.02 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to two Ho3+ and one W6+ atom. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two Ho3+ and one W6+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Ho3+ and one W6+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to two Ho3+ and one W6+ atom. In the fifth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two Ho3+ and one W6+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to two Ho3+ and one W6+ atom. In the seventh O2- site, O2- is bonded in a 4-coordinate geometry to three Ho3+ and one W6+ atom. In the eighth O2- site, O2- is bonded in a 4-coordinate geometry to three Ho3+ and one W6+ atom. In the ninth O2- site, O2- is bonded in a distorted tetrahedral geometry to three Ho3+ and one W6+ atom. In the tenth O2- site, O2- is bonded in a 3-coordinate geometry to three Ho3+ and one W6+ atom. In the eleventh O2- site, O2- is bonded in a 3-coordinate geometry to three Ho3+ and one W6+ atom. In the twelfth O2- site, O2- is bonded in a 3-coordinate geometry to two Ho3+ and one W6+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ho2WO6 by Materials Project

Ho2WO6 crystallizes in the monoclinic P2/c space group. The structure is three-dimensional. there are three inequivalent Ho3+ sites. In the first Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ho–O bond distances ranging from 2.26–2.56 Å. In the second Ho3+ site, Ho3+ is bonded to seven O2- atoms to form distorted HoO7 pentagonal bipyramids that share corners with three equivalent WO6 octahedra, edges with two equivalent WO6 octahedra, and an edgeedge with one HoO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 43–56°. There are a spread of Ho–O bond distances ranging from 2.25–2.42 Å. In the third Ho3+ site, Ho3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ho–O bond distances ranging from 2.33–2.45 Å. W6+ is bonded to six O2- atoms to form distorted WO6 octahedra that share corners with three equivalent HoO7 pentagonal bipyramids and edges with two equivalent HoO7 pentagonal bipyramids. There are a spread of W–O bond distances ranging from 1.88–2.09 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded to three Ho3+ and one W6+ atom to form a mixture of edge and corner-sharing OHo3W tetrahedra. In the second O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two Ho3+ and one W6+ atom. In the third O2- site, O2- is bonded to three Ho3+ and one W6+ atom to form distorted corner-sharing OHo3W tetrahedra. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to three Ho3+ and one W6+ atom. In the fifth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two Ho3+ and one W6+ atom. In the sixth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two Ho3+ and one W6+ atom.

36 MATERIALS SCIENCE↗