Materials Data on Mg4Nb2O9 by Materials Project

doi:10.17188/1192728

Title: Materials Data on Mg4Nb2O9 by Materials Project

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Abstract

Mg4Nb2O9 is Ilmenite-like structured and crystallizes in the trigonal P-3c1 space group. The structure is three-dimensional. there are two inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to six equivalent O2- atoms to form MgO6 octahedra that share corners with three equivalent MgO6 octahedra, corners with six equivalent NbO6 octahedra, edges with three equivalent MgO6 octahedra, and a faceface with one MgO6 octahedra. The corner-sharing octahedra tilt angles range from 47–59°. There are three shorter (2.09 Å) and three longer (2.17 Å) Mg–O bond lengths. In the second Mg2+ site, Mg2+ is bonded to six O2- atoms to form distorted MgO6 octahedra that share corners with three equivalent NbO6 octahedra, corners with six MgO6 octahedra, edges with three equivalent NbO6 octahedra, and a faceface with one MgO6 octahedra. The corner-sharing octahedra tilt angles range from 48–65°. There are three shorter (2.04 Å) and three longer (2.24 Å) Mg–O bond lengths. Nb5+ is bonded to six O2- atoms to form distorted NbO6 octahedra that share corners with nine MgO6 octahedra, edges with three equivalent MgO6 octahedra, and a faceface with one NbO6 octahedra. The corner-sharing octahedra tilt angles range from 47–59°. There are three shorter (1.93 Å) andmore »« less

Authors:: The Materials Project

Publication Date:: Mon May 04 00:00:00 EDT 2020

Other Number(s):: mp-17841

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; Mg4Nb2O9; Mg-Nb-O

OSTI Identifier:: 1192728

DOI:: https://doi.org/10.17188/1192728

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                    The Materials Project. Materials Data on Mg4Nb2O9 by Materials Project.  United States: N. p., 2020. 
        Web.  doi:10.17188/1192728.

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                    The Materials Project. Materials Data on Mg4Nb2O9 by Materials Project.  United States.  doi:https://doi.org/10.17188/1192728

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                    The Materials Project. 2020.  
"Materials Data on Mg4Nb2O9 by Materials Project".  United States.  doi:https://doi.org/10.17188/1192728.  https://www.osti.gov/servlets/purl/1192728. Pub date:Mon May 04 00:00:00 EDT 2020

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@article{osti_1192728,

  title        = {Materials Data on Mg4Nb2O9 by Materials Project},

  author       = {The Materials Project},

  abstractNote = {Mg4Nb2O9 is Ilmenite-like structured and crystallizes in the trigonal P-3c1 space group. The structure is three-dimensional. there are two inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to six equivalent O2- atoms to form MgO6 octahedra that share corners with three equivalent MgO6 octahedra, corners with six equivalent NbO6 octahedra, edges with three equivalent MgO6 octahedra, and a faceface with one MgO6 octahedra. The corner-sharing octahedra tilt angles range from 47–59°. There are three shorter (2.09 Å) and three longer (2.17 Å) Mg–O bond lengths. In the second Mg2+ site, Mg2+ is bonded to six O2- atoms to form distorted MgO6 octahedra that share corners with three equivalent NbO6 octahedra, corners with six MgO6 octahedra, edges with three equivalent NbO6 octahedra, and a faceface with one MgO6 octahedra. The corner-sharing octahedra tilt angles range from 48–65°. There are three shorter (2.04 Å) and three longer (2.24 Å) Mg–O bond lengths. Nb5+ is bonded to six O2- atoms to form distorted NbO6 octahedra that share corners with nine MgO6 octahedra, edges with three equivalent MgO6 octahedra, and a faceface with one NbO6 octahedra. The corner-sharing octahedra tilt angles range from 47–59°. There are three shorter (1.93 Å) and three longer (2.16 Å) Nb–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to three Mg2+ and one Nb5+ atom to form a mixture of distorted corner and edge-sharing OMg3Nb trigonal pyramids. In the second O2- site, O2- is bonded to two equivalent Mg2+ and two equivalent Nb5+ atoms to form a mixture of distorted corner and edge-sharing OMg2Nb2 trigonal pyramids.},

  doi          = {10.17188/1192728},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Mon May 04 00:00:00 EDT 2020},

  month        = {Mon May 04 00:00:00 EDT 2020}

}

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DOI: https://doi.org/10.17188/1192728

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