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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Yb2Ti2O7 by Materials Project

Yb2Ti2O7 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Yb3+ is bonded to eight O2- atoms to form distorted YbO8 hexagonal bipyramids that share edges with six equivalent YbO8 hexagonal bipyramids and edges with six equivalent TiO6 octahedra. There are two shorter (2.21 Å) and six longer (2.54 Å) Yb–O bond lengths. Ti4+ is bonded to six equivalent O2- atoms to form TiO6 octahedra that share corners with six equivalent TiO6 octahedra and edges with six equivalent YbO8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 46°. All Ti–O bond lengths are 1.96 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Yb3+ atoms to form corner-sharing OYb4 tetrahedra. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Yb3+ and two equivalent Ti4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Yb3Ti3O14 by Materials Project

Yb3Ti3O14 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Yb sites. In the first Yb site, Yb is bonded in a distorted body-centered cubic geometry to eight O atoms. There are a spread of Yb–O bond distances ranging from 2.28–2.36 Å. In the second Yb site, Yb is bonded to eight O atoms to form YbO8 hexagonal bipyramids that share edges with six TiO6 octahedra. There are a spread of Yb–O bond distances ranging from 2.25–2.65 Å. There are two inequivalent Ti sites. In the first Ti site, Ti is bonded to six O atoms to form TiO6 octahedra that share corners with four TiO6 octahedra and edges with two equivalent YbO8 hexagonal bipyramids. The corner-sharing octahedra tilt angles range from 34–43°. There are a spread of Ti–O bond distances ranging from 1.90–2.08 Å. In the second Ti site, Ti is bonded to six O atoms to form TiO6 octahedra that share corners with four equivalent TiO6 octahedra and edges with two equivalent YbO8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 43°. There is four shorter (1.96 Å) and two longer (1.99 Å) Ti–O bond length. There are five inequivalent O sites. In the first O site, O is bonded to two Yb and two Ti atoms to form a mixture of distorted edge and corner-sharing OYb2Ti2 trigonal pyramids. In the second O site, O is bonded in a distorted L-shaped geometry to one Yb and one Ti atom. In the third O site, O is bonded in a trigonal non-coplanar geometry to two equivalent Yb and one Ti atom. In the fourth O site, O is bonded in a distorted bent 150 degrees geometry to one Yb and two equivalent Ti atoms. In the fifth O site, O is bonded in a trigonal non-coplanar geometry to three Yb atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on YbTiO3 by Materials Project

YbTiO3 is Ilmenite structured and crystallizes in the trigonal R-3 space group. The structure is three-dimensional. Yb2+ is bonded to six equivalent O2- atoms to form distorted YbO6 pentagonal pyramids that share corners with nine equivalent TiO6 octahedra, edges with three equivalent YbO6 pentagonal pyramids, and a faceface with one TiO6 octahedra. The corner-sharing octahedra tilt angles range from 38–64°. There are three shorter (2.28 Å) and three longer (2.37 Å) Yb–O bond lengths. Ti4+ is bonded to six equivalent O2- atoms to form distorted TiO6 octahedra that share corners with nine equivalent YbO6 pentagonal pyramids, edges with three equivalent TiO6 octahedra, and a faceface with one YbO6 pentagonal pyramid. There are three shorter (1.89 Å) and three longer (2.13 Å) Ti–O bond lengths. O2- is bonded in a distorted see-saw-like geometry to two equivalent Yb2+ and two equivalent Ti4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on YbTiO3 by Materials Project

YbTiO3 is Orthorhombic Perovskite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Yb2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Yb–O bond distances ranging from 2.31–2.67 Å. Ti4+ is bonded to six O2- atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedra tilt angles range from 28–29°. There are a spread of Ti–O bond distances ranging from 1.96–1.98 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Yb2+ and two equivalent Ti4+ atoms to form distorted corner-sharing OYb2Ti2 tetrahedra. In the second O2- site, O2- is bonded in a 5-coordinate geometry to three equivalent Yb2+ and two equivalent Ti4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Yb2TiO5 by Materials Project

Yb2TiO5 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Yb3+ sites. In the first Yb3+ site, Yb3+ is bonded to seven O2- atoms to form distorted YbO7 hexagonal pyramids that share corners with three equivalent TiO5 trigonal bipyramids, edges with two equivalent YbO7 hexagonal pyramids, and edges with two equivalent TiO5 trigonal bipyramids. There are a spread of Yb–O bond distances ranging from 2.32–2.55 Å. In the second Yb3+ site, Yb3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Yb–O bond distances ranging from 2.29–2.38 Å. Ti4+ is bonded to five O2- atoms to form distorted TiO5 trigonal bipyramids that share corners with three equivalent YbO7 hexagonal pyramids, corners with two equivalent TiO5 trigonal bipyramids, and edges with two equivalent YbO7 hexagonal pyramids. There are a spread of Ti–O bond distances ranging from 1.77–1.96 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded to four Yb3+ atoms to form a mixture of edge and corner-sharing OYb4 tetrahedra. In the second O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Yb3+ and one Ti4+ atom. In the third O2- site, O2- is bonded to three Yb3+ and one Ti4+ atom to form distorted OYb3Ti tetrahedra that share corners with eight OYb4 tetrahedra and edges with three OYb3Ti tetrahedra. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to two Yb3+ and two equivalent Ti4+ atoms. In the fifth O2- site, O2- is bonded to three Yb3+ and one Ti4+ atom to form OYb3Ti tetrahedra that share corners with eight OYb4 tetrahedra and edges with two equivalent OYb3Ti tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on YbTiO3 by Materials Project

YbTiO3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Yb2+ is bonded to twelve equivalent O2- atoms to form YbO12 cuboctahedra that share corners with twelve equivalent YbO12 cuboctahedra, faces with six equivalent YbO12 cuboctahedra, and faces with eight equivalent TiO6 octahedra. All Yb–O bond lengths are 2.72 Å. Ti4+ is bonded to six equivalent O2- atoms to form TiO6 octahedra that share corners with six equivalent TiO6 octahedra and faces with eight equivalent YbO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Ti–O bond lengths are 1.93 Å. O2- is bonded in a distorted linear geometry to four equivalent Yb2+ and two equivalent Ti4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Yb2TiO5 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗