Materials Data on Ca3GaAs3 by Materials Project

doi:10.17188/1264936

Title: Materials Data on Ca3GaAs3 by Materials Project

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Abstract

Ca3GaAs3 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are three inequivalent Ca2+ sites. In the first Ca2+ site, Ca2+ is bonded to five As3- atoms to form distorted CaAs5 trigonal bipyramids that share corners with nine CaAs6 octahedra, corners with two equivalent GaAs4 tetrahedra, edges with four CaAs6 octahedra, edges with two equivalent GaAs4 tetrahedra, edges with two equivalent CaAs5 trigonal bipyramids, and a faceface with one CaAs6 octahedra. The corner-sharing octahedra tilt angles range from 23–56°. There are a spread of Ca–As bond distances ranging from 2.93–3.06 Å. In the second Ca2+ site, Ca2+ is bonded to six As3- atoms to form CaAs6 octahedra that share corners with seven equivalent CaAs6 octahedra, corners with three equivalent GaAs4 tetrahedra, corners with six equivalent CaAs5 trigonal bipyramids, edges with four equivalent CaAs6 octahedra, edges with two equivalent GaAs4 tetrahedra, an edgeedge with one CaAs5 trigonal bipyramid, a faceface with one CaAs6 octahedra, and a faceface with one CaAs5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 40–54°. There are a spread of Ca–As bond distances ranging from 2.97–3.29 Å. In the third Ca2+ site, Ca2+ is bonded to six As3- atoms to form CaAs6 octahedramore »« less

Authors:: The Materials Project

Publication Date:: Wed Jul 22 00:00:00 EDT 2020

Other Number(s):: mp-541062

DOE Contract Number:: AC02-05CH11231; EDCBEE

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

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

Collaborations:: MIT; UC Berkeley; Duke; U Louvain

Subject:: 36 MATERIALS SCIENCE

Keywords:: crystal structure; Ca3GaAs3; As-Ca-Ga

OSTI Identifier:: 1264936

DOI:: https://doi.org/10.17188/1264936

Citation Formats


                    The Materials Project. Materials Data on Ca3GaAs3 by Materials Project.  United States: N. p., 2020. 
        Web.  doi:10.17188/1264936.

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                    The Materials Project. Materials Data on Ca3GaAs3 by Materials Project.  United States.  doi:https://doi.org/10.17188/1264936

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                    The Materials Project. 2020.  
"Materials Data on Ca3GaAs3 by Materials Project".  United States.  doi:https://doi.org/10.17188/1264936.  https://www.osti.gov/servlets/purl/1264936. Pub date:Wed Jul 22 00:00:00 EDT 2020

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@article{osti_1264936,

  title        = {Materials Data on Ca3GaAs3 by Materials Project},

  author       = {The Materials Project},

  abstractNote = {Ca3GaAs3 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are three inequivalent Ca2+ sites. In the first Ca2+ site, Ca2+ is bonded to five As3- atoms to form distorted CaAs5 trigonal bipyramids that share corners with nine CaAs6 octahedra, corners with two equivalent GaAs4 tetrahedra, edges with four CaAs6 octahedra, edges with two equivalent GaAs4 tetrahedra, edges with two equivalent CaAs5 trigonal bipyramids, and a faceface with one CaAs6 octahedra. The corner-sharing octahedra tilt angles range from 23–56°. There are a spread of Ca–As bond distances ranging from 2.93–3.06 Å. In the second Ca2+ site, Ca2+ is bonded to six As3- atoms to form CaAs6 octahedra that share corners with seven equivalent CaAs6 octahedra, corners with three equivalent GaAs4 tetrahedra, corners with six equivalent CaAs5 trigonal bipyramids, edges with four equivalent CaAs6 octahedra, edges with two equivalent GaAs4 tetrahedra, an edgeedge with one CaAs5 trigonal bipyramid, a faceface with one CaAs6 octahedra, and a faceface with one CaAs5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 40–54°. There are a spread of Ca–As bond distances ranging from 2.97–3.29 Å. In the third Ca2+ site, Ca2+ is bonded to six As3- atoms to form CaAs6 octahedra that share corners with seven equivalent CaAs6 octahedra, corners with three equivalent GaAs4 tetrahedra, corners with three equivalent CaAs5 trigonal bipyramids, edges with four equivalent CaAs6 octahedra, edges with three equivalent GaAs4 tetrahedra, edges with three equivalent CaAs5 trigonal bipyramids, and a faceface with one CaAs6 octahedra. The corner-sharing octahedra tilt angles range from 40–54°. There are a spread of Ca–As bond distances ranging from 2.96–3.36 Å. Ga3+ is bonded to four As3- atoms to form GaAs4 tetrahedra that share corners with six CaAs6 octahedra, corners with two equivalent GaAs4 tetrahedra, corners with two equivalent CaAs5 trigonal bipyramids, edges with five CaAs6 octahedra, and edges with two equivalent CaAs5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 23–51°. There are a spread of Ga–As bond distances ranging from 2.55–2.58 Å. There are three inequivalent As3- sites. In the first As3- site, As3- is bonded to six Ca2+ and one Ga3+ atom to form a mixture of distorted face, edge, and corner-sharing AsCa6Ga pentagonal bipyramids. In the second As3- site, As3- is bonded to six Ca2+ and one Ga3+ atom to form a mixture of distorted face, edge, and corner-sharing AsCa6Ga pentagonal bipyramids. In the third As3- site, As3- is bonded in a 7-coordinate geometry to five Ca2+ and two equivalent Ga3+ atoms.},

  doi          = {10.17188/1264936},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Wed Jul 22 00:00:00 EDT 2020},

  month        = {Wed Jul 22 00:00:00 EDT 2020}

}

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DOI: https://doi.org/10.17188/1264936

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