Materials Data on SrLa2Al2O7 by Materials Project

doi:10.17188/1711624

Title: Materials Data on SrLa2Al2O7 by Materials Project

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Abstract

SrLa2Al2O7 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Sr2+ is bonded to twelve O2- atoms to form SrO12 cuboctahedra that share corners with four equivalent SrO12 cuboctahedra, faces with four equivalent SrO12 cuboctahedra, and faces with eight equivalent AlO6 octahedra. There are four shorter (2.68 Å) and eight longer (2.80 Å) Sr–O bond lengths. La3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of La–O bond distances ranging from 2.44–2.71 Å. Al3+ is bonded to six O2- atoms to form distorted AlO6 octahedra that share corners with five equivalent AlO6 octahedra and faces with four equivalent SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–12°. There are a spread of Al–O bond distances ranging from 1.86–2.31 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Sr2+, two equivalent La3+, and two equivalent Al3+ atoms. In the second O2- site, O2- is bonded to five equivalent La3+ and one Al3+ atom to form a mixture of distorted edge and corner-sharing OLa5Al octahedra. The corner-sharing octahedral tilt angles are 18°. In the third O2- site, O2- is bondedmore »« less

Authors:: The Materials Project

Publication Date:: Sun May 03 00:00:00 EDT 2020

Other Number(s):: mp-1218238

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; SrLa2Al2O7; Al-La-O-Sr

OSTI Identifier:: 1711624

DOI:: https://doi.org/10.17188/1711624

Citation Formats


                    The Materials Project. Materials Data on SrLa2Al2O7 by Materials Project.  United States: N. p., 2020. 
        Web.  doi:10.17188/1711624.

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                    The Materials Project. Materials Data on SrLa2Al2O7 by Materials Project.  United States.  doi:https://doi.org/10.17188/1711624

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                    The Materials Project. 2020.  
"Materials Data on SrLa2Al2O7 by Materials Project".  United States.  doi:https://doi.org/10.17188/1711624.  https://www.osti.gov/servlets/purl/1711624. Pub date:Sun May 03 00:00:00 EDT 2020

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@article{osti_1711624,

  title        = {Materials Data on SrLa2Al2O7 by Materials Project},

  author       = {The Materials Project},

  abstractNote = {SrLa2Al2O7 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Sr2+ is bonded to twelve O2- atoms to form SrO12 cuboctahedra that share corners with four equivalent SrO12 cuboctahedra, faces with four equivalent SrO12 cuboctahedra, and faces with eight equivalent AlO6 octahedra. There are four shorter (2.68 Å) and eight longer (2.80 Å) Sr–O bond lengths. La3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of La–O bond distances ranging from 2.44–2.71 Å. Al3+ is bonded to six O2- atoms to form distorted AlO6 octahedra that share corners with five equivalent AlO6 octahedra and faces with four equivalent SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–12°. There are a spread of Al–O bond distances ranging from 1.86–2.31 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Sr2+, two equivalent La3+, and two equivalent Al3+ atoms. In the second O2- site, O2- is bonded to five equivalent La3+ and one Al3+ atom to form a mixture of distorted edge and corner-sharing OLa5Al octahedra. The corner-sharing octahedral tilt angles are 18°. In the third O2- site, O2- is bonded in a distorted linear geometry to four equivalent Sr2+ and two equivalent Al3+ atoms.},

  doi          = {10.17188/1711624},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sun May 03 00:00:00 EDT 2020},

  month        = {Sun May 03 00:00:00 EDT 2020}

}

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DOI: https://doi.org/10.17188/1711624

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