Materials Data on Yb(TmSe2)2 by Materials Project

doi:10.17188/1655255

Title: Materials Data on Yb(TmSe2)2 by Materials Project

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Abstract

Yb(TmSe2)2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Yb2+ is bonded to seven Se2- atoms to form distorted YbSe7 pentagonal bipyramids that share corners with eight TmSe6 octahedra, edges with five TmSe6 octahedra, edges with two equivalent YbSe7 pentagonal bipyramids, and faces with two equivalent YbSe7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 14–66°. There are a spread of Yb–Se bond distances ranging from 2.97–3.12 Å. There are two inequivalent Tm3+ sites. In the first Tm3+ site, Tm3+ is bonded to six Se2- atoms to form TmSe6 octahedra that share corners with three equivalent TmSe6 octahedra, corners with four equivalent YbSe7 pentagonal bipyramids, edges with six TmSe6 octahedra, and an edgeedge with one YbSe7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 52–59°. There are a spread of Tm–Se bond distances ranging from 2.81–2.91 Å. In the second Tm3+ site, Tm3+ is bonded to six Se2- atoms to form TmSe6 octahedra that share corners with three equivalent TmSe6 octahedra, corners with four equivalent YbSe7 pentagonal bipyramids, edges with four TmSe6 octahedra, and edges with four equivalent YbSe7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 52–59°. There are a spread of Tm–Semore »« less

Publication Date:: 2020-07-22

Other Number(s):: mp-1193091

DOE Contract Number:: AC02-05CH11231

Research Org.:: LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Collaborations:: The Materials Project; MIT; UC Berkeley; Duke; U Louvain

Subject:: 36 MATERIALS SCIENCE; Se-Tm-Yb; Yb(TmSe2)2; crystal structure

OSTI Identifier:: 1655255

DOI:: https://doi.org/10.17188/1655255

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                    Materials Data on Yb(TmSe2)2 by Materials Project.  United States: N. p., 2020. 
        Web.  doi:10.17188/1655255.

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                    Materials Data on Yb(TmSe2)2 by Materials Project.  United States.  doi:https://doi.org/10.17188/1655255

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                    2020.  
"Materials Data on Yb(TmSe2)2 by Materials Project".  United States.  doi:https://doi.org/10.17188/1655255.  https://www.osti.gov/servlets/purl/1655255. Pub date:Wed Jul 22 00:00:00 EDT 2020

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@article{osti_1655255,

  title        = {Materials Data on Yb(TmSe2)2 by Materials Project},

  
  abstractNote = {Yb(TmSe2)2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Yb2+ is bonded to seven Se2- atoms to form distorted YbSe7 pentagonal bipyramids that share corners with eight TmSe6 octahedra, edges with five TmSe6 octahedra, edges with two equivalent YbSe7 pentagonal bipyramids, and faces with two equivalent YbSe7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 14–66°. There are a spread of Yb–Se bond distances ranging from 2.97–3.12 Å. There are two inequivalent Tm3+ sites. In the first Tm3+ site, Tm3+ is bonded to six Se2- atoms to form TmSe6 octahedra that share corners with three equivalent TmSe6 octahedra, corners with four equivalent YbSe7 pentagonal bipyramids, edges with six TmSe6 octahedra, and an edgeedge with one YbSe7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 52–59°. There are a spread of Tm–Se bond distances ranging from 2.81–2.91 Å. In the second Tm3+ site, Tm3+ is bonded to six Se2- atoms to form TmSe6 octahedra that share corners with three equivalent TmSe6 octahedra, corners with four equivalent YbSe7 pentagonal bipyramids, edges with four TmSe6 octahedra, and edges with four equivalent YbSe7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 52–59°. There are a spread of Tm–Se bond distances ranging from 2.81–2.87 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded to two equivalent Yb2+ and three Tm3+ atoms to form a mixture of distorted edge and corner-sharing SeYb2Tm3 trigonal bipyramids. In the second Se2- site, Se2- is bonded to two equivalent Yb2+ and three Tm3+ atoms to form SeYb2Tm3 square pyramids that share corners with two equivalent SeYb3Tm2 square pyramids, corners with two equivalent SeYb2Tm3 trigonal bipyramids, edges with five SeYb2Tm3 square pyramids, and edges with three equivalent SeYb2Tm3 trigonal bipyramids. In the third Se2- site, Se2- is bonded to three equivalent Yb2+ and two equivalent Tm3+ atoms to form a mixture of edge and corner-sharing SeYb3Tm2 square pyramids. In the fourth Se2- site, Se2- is bonded in a rectangular see-saw-like geometry to four Tm3+ atoms.},

  doi          = {10.17188/1655255},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {2020},

  month        = {7}

}

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