DOI: 10.17188/1283009
title: Materials Data on Dy10Ti6O27 by Materials Project

description: Dy10Ti6O27 crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are fifteen inequivalent Dy3+ sites. In the first Dy3+ site, Dy3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Dy–O bond distances ranging from 2.20–2.51 Å. In the second Dy3+ site, Dy3+ is bonded to seven O2- atoms to form distorted DyO7 hexagonal pyramids that share a cornercorner with one DyO7 hexagonal pyramid, a cornercorner with one TiO5 trigonal bipyramid, an edgeedge with one DyO7 hexagonal pyramid, edges with two TiO6 octahedra, and an edgeedge with one TiO5 trigonal bipyramid. There are a spread of Dy–O bond distances ranging from 2.24–2.40 Å. In the third Dy3+ site, Dy3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Dy–O bond distances ranging from 2.17–2.63 Å. In the fourth Dy3+ site, Dy3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Dy–O bond distances ranging from 2.20–2.72 Å. In the fifth Dy3+ site, Dy3+ is bonded to seven O2- atoms to form distorted DyO7 hexagonal pyramids that share a cornercorner with one TiO6 octahedra and edges with two equivalent DyO6 pentagonal pyramids. The corner-sharing octahedral tilt angles are 64°. There are a spread of Dy–O bond distances ranging from 2.22–2.50 Å. In the sixth Dy3+ site, Dy3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Dy–O bond distances ranging from 2.23–2.56 Å. In the seventh Dy3+ site, Dy3+ is bonded to six O2- atoms to form distorted edge-sharing DyO6 pentagonal pyramids. There are a spread of Dy–O bond distances ranging from 2.19–2.35 Å. In the eighth Dy3+ site, Dy3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Dy–O bond distances ranging from 2.20–2.34 Å. In the ninth Dy3+ site, Dy3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Dy–O bond distances ranging from 2.19–2.38 Å. In the tenth Dy3+ site, Dy3+ is bonded to six O2- atoms to form distorted DyO6 octahedra that share corners with six TiO6 octahedra and edges with two equivalent DyO7 hexagonal pyramids. The corner-sharing octahedra tilt angles range from 60–63°. There are a spread of Dy–O bond distances ranging from 2.23–2.33 Å. In the eleventh Dy3+ site, Dy3+ is bonded to eight O2- atoms to form distorted DyO8 hexagonal bipyramids that share a cornercorner with one DyO7 hexagonal pyramid and edges with six TiO6 octahedra. There are a spread of Dy–O bond distances ranging from 2.20–2.63 Å. In the twelfth Dy3+ site, Dy3+ is bonded to seven O2- atoms to form distorted DyO7 hexagonal pyramids that share a cornercorner with one DyO8 hexagonal bipyramid, corners with two equivalent TiO6 octahedra, edges with two equivalent DyO6 octahedra, and edges with two equivalent TiO6 octahedra. The corner-sharing octahedral tilt angles are 61°. There are a spread of Dy–O bond distances ranging from 2.19–2.45 Å. In the thirteenth Dy3+ site, Dy3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Dy–O bond distances ranging from 2.08–2.65 Å. In the fourteenth Dy3+ site, Dy3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Dy–O bond distances ranging from 2.23–2.64 Å. In the fifteenth Dy3+ site, Dy3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Dy–O bond distances ranging from 2.20–2.93 Å. There are nine inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with five TiO6 octahedra, an edgeedge with one DyO8 hexagonal bipyramid, and an edgeedge with one DyO7 hexagonal pyramid. The corner-sharing octahedra tilt angles range from 29–54°. There are a spread of Ti–O bond distances ranging from 1.92–2.04 Å. In the second Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share corners with five TiO6 octahedra and edges with two equivalent DyO7 hexagonal pyramids. The corner-sharing octahedra tilt angles range from 43–51°. There are a spread of Ti–O bond distances ranging from 1.85–2.18 Å. In the third Ti4+ site, Ti4+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ti–O bond distances ranging from 1.89–2.43 Å. In the fourth Ti4+ site, Ti4+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ti–O bond distances ranging from 1.81–2.42 Å. In the fifth Ti4+ site, Ti4+ is bonded to five O2- atoms to form distorted TiO5 trigonal bipyramids that share corners with two equivalent DyO7 hexagonal pyramids and edges with two equivalent DyO7 hexagonal pyramids. There are a spread of Ti–O bond distances ranging from 1.83–2.11 Å. In the sixth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share a cornercorner with one DyO7 hexagonal pyramid, corners with two equivalent DyO6 octahedra, corners with four TiO6 octahedra, an edgeedge with one DyO8 hexagonal bipyramid, and an edgeedge with one DyO7 hexagonal pyramid. The corner-sharing octahedra tilt angles range from 35–61°. There are a spread of Ti–O bond distances ranging from 1.90–2.05 Å. In the seventh Ti4+ site, Ti4+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ti–O bond distances ranging from 1.89–2.12 Å. In the eighth Ti4+ site, Ti4+ is bonded to six O2- atoms to form TiO6 octahedra that share a cornercorner with one DyO6 octahedra, corners with five TiO6 octahedra, and edges with two equivalent DyO8 hexagonal bipyramids. The corner-sharing octahedra tilt angles range from 35–61°. There are a spread of Ti–O bond distances ranging from 1.89–2.07 Å. In the ninth Ti4+ site, Ti4+ is bonded to six O2- atoms to form distorted TiO6 octahedra that share a cornercorner with one DyO7 hexagonal pyramid, a cornercorner with one DyO6 octahedra, and corners with two equivalent TiO6 octahedra. The corner-sharing octahedra tilt angles range from 50–63°. There are a spread of Ti–O bond distances ranging from 1.87–2.30 Å. There are thirty-eight inequivalent O2- sites. In the first O2- site, O2- is bonded to three Dy3+ and one Ti4+ atom to form ODy3Ti tetrahedra that share corners with five ODy2Ti2 tetrahedra, corners with three equivalent ODy3Ti trigonal pyramids, and edges with two equivalent ODy2Ti2 tetrahedra. In the second O2- site, O2- is bonded to two Dy3+ and two Ti4+ atoms to form distorted ODy2Ti2 tetrahedra that share corners with four ODy2Ti2 tetrahedra, corners with two equivalent ODy3Ti trigonal pyramids, and edges with four ODy3Ti tetrahedra. In the third O2- site, O2- is bonded in a 4-coordinate geometry to two Dy3+ and two Ti4+ atoms. In the fourth O2- site, O2- is bonded to four Dy3+ atoms to form ODy4 tetrahedra that share corners with eight ODy2Ti2 tetrahedra, a cornercorner with one ODy3Ti trigonal pyramid, and edges with three ODy2Ti2 tetrahedra. In the fifth O2- site, O2- is bonded to three Dy3+ and one Ti4+ atom to form ODy3Ti tetrahedra that share corners with eleven ODy4 tetrahedra, an edgeedge with one ODy4 tetrahedra, and an edgeedge with one ODy2Ti2 trigonal pyramid. In the sixth O2- site, O2- is bonded to two equivalent Dy3+ and two Ti4+ atoms to form distorted ODy2Ti2 tetrahedra that share corners with three ODy3Ti tetrahedra, edges with two equivalent ODy2Ti2 tetrahedra, and an edgeedge with one ODy3Ti trigonal pyramid. In the seventh O2- site, O2- is bonded in a 4-coordinate geometry to three Dy3+ and one Ti4+ atom. In the eighth O2- site, O2- is bonded to two equivalent Dy3+ and two Ti4+ atoms to form a mixture of distorted edge and corner-sharing ODy2Ti2 tetrahedra. In the ninth O2- site, O2- is bonded to three Dy3+ and one Ti4+ atom to form a mixture of distorted edge and corner-sharing ODy3Ti trigonal pyramids. In the tenth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Dy3+ and two Ti4+ atoms. In the eleventh O2- site, O2- is bonded in a 4-coordinate geometry to three Dy3+ and one Ti4+ atom. In the twelfth O2- site, O2- is bonded to two Dy3+ and two equivalent Ti4+ atoms to form distorted ODy2Ti2 trigonal pyramids that share corners with three ODy4 tetrahedra and edges with five ODy3Ti tetrahedra. In the thirteenth O2- site, O2- is bonded to two Dy3+ and two Ti4+ atoms to form distorted ODy2Ti2 tetrahedra that share corners with eight ODy3Ti tetrahedra and edges with three ODy2Ti2 tetrahedra. In the fourteenth O2- site, O2- is bonded in a 4-coordinate geometry to three Dy3+ and one Ti4+ atom. In the fifteenth O2- site, O2- is bonded in a 1-coordinate geometry to three Dy3+ and one Ti4+ atom. In the sixteenth O2- site, O2- is bonded to three Dy3+ and one Ti4+ atom to form distorted ODy3Ti tetrahedra that share corners with eight ODy3Ti tetrahedra, edges with two equivalent ODy2Ti2 tetrahedra, and an edgeedge with one ODy3Ti trigonal pyramid. In the seventeenth O2- site, O2- is bonded to four Dy3+ atoms to form ODy4 tetrahedra that share corners with nine ODy3Ti tetrahedra, edges with two equivalent ODy4 tetrahedra, and an edgeedge with one ODy2Ti2 trigonal pyramid. In the eighteenth O2- site, O2- is bonded to four Dy3+ atoms to form a mixture of edge and corner-sharing ODy4 tetrahedra. In the nineteenth O2- site, O2- is bonded to four Dy3+ atoms to form ODy4 tetrahedra that share corners with eight ODy2Ti2 tetrahedra, a cornercorner with one ODy2Ti2 trigonal pyramid, and edges with four ODy4 tetrahedra. In the twentieth O2- site, O2- is bonded to three Dy3+ and one Ti4+ atom to form distorted ODy3Ti tetrahedra that share corners with nine ODy3Ti tetrahedra, an edgeedge with one ODy3Ti tetrahedra, and an edgeedge with one ODy2Ti2 trigonal pyramid. In the twenty-first O2- site, O2- is bonded in a 2-coordinate geometry to one Dy3+ and two equivalent Ti4+ atoms. In the twenty-second O2- site, O2- is bonded to two Dy3+ and two Ti4+ atoms to form distorted ODy2Ti2 tetrahedra that share corners with five ODy3Ti tetrahedra and edges with three ODy4 tetrahedra. In the twenty-third O2- site, O2- is bonded to three Dy3+ and one Ti4+ atom to form distorted ODy3Ti tetrahedra that share corners with six ODy3Ti tetrahedra, a cornercorner with one ODy2Ti2 trigonal pyramid, and edges with five ODy2Ti2 tetrahedra. In the twenty-fourth O2- site, O2- is bonded to three Dy3+ and one Ti4+ atom to form distorted ODy3Ti tetrahedra that share corners with eleven ODy4 tetrahedra and edges with four ODy2Ti2 tetrahedra. In the twenty-fifth O2- site, O2- is bonded to three Dy3+ and one Ti4+ atom to form ODy3Ti tetrahedra that share corners with fourteen ODy4 tetrahedra and edges with two equivalent ODy3Ti tetrahedra. In the twenty-sixth O2- site, O2- is bonded in a 3-coordinate geometry to one Dy3+ and two equivalent Ti4+ atoms. In the twenty-seventh O2- site, O2- is bonded to four Dy3+ atoms to form ODy4 tetrahedra that share corners with eleven ODy3Ti tetrahedra and edges with four ODy2Ti2 tetrahedra. In the twenty-eighth O2- site, O2- is bonded to four Dy3+ atoms to form ODy4 tetrahedra that share corners with ten ODy4 tetrahedra and edges with four ODy2Ti2 tetrahedra. In the twenty-ninth O2- site, O2- is bonded to three Dy3+ and one Ti4+ atom to form distorted ODy3Ti tetrahedra that share corners with ten ODy3Ti tetrahedra and edges with four ODy4 tetrahedra. In the thirtieth O2- site, O2- is bonded in a 3-coordinate geometry to one Dy3+ and two Ti4+ atoms. In the thirty-first O2- site, O2- is bonded in a 4-coordinate geometry to two Dy3+ and two Ti4+ atoms. In the thirty-second O2- site, O2- is bonded to three Dy3+ and one Ti4+ atom to form ODy3Ti tetrahedra that share corners with five ODy3Ti tetrahedra and edges with five ODy4 tetrahedra. In the thirty-third O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Dy3+ and two Ti4+ atoms. In the thirty-fourth O2- site, O2- is bonded to two Dy3+ and two equivalent Ti4+ atoms to form distorted ODy2Ti2 tetrahedra that share corners with five ODy4 tetra