Materials Data on SrEu2Al2O7 by Materials Project

doi:10.17188/1316480

Title: Materials Data on SrEu2Al2O7 by Materials Project

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Abstract

Eu2SrAl2O7 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 (2.66 Å) and eight longer (2.76 Å) Sr–O bond lengths. Eu3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Eu–O bond distances ranging from 2.34–2.68 Å. Al3+ is bonded to six O2- atoms to form 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 0–8°. There is five shorter (1.89 Å) and one longer (2.09 Å) Al–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Sr2+ and two equivalent Al3+ atoms to form a mixture of distorted edge and corner-sharing OSr4Al2 octahedra. The corner-sharing octahedral tilt angles are 0°. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Sr2+, two equivalent Eu3+, and two equivalent Al3+ atoms. In the third O2- site, O2-more »« less

Authors:: The Materials Project

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

Other Number(s):: mp-983228

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; SrEu2Al2O7; Al-Eu-O-Sr

OSTI Identifier:: 1316480

DOI:: https://doi.org/10.17188/1316480

Citation Formats


                    The Materials Project. Materials Data on SrEu2Al2O7 by Materials Project.  United States: N. p., 2020. 
        Web.  doi:10.17188/1316480.

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                    The Materials Project. Materials Data on SrEu2Al2O7 by Materials Project.  United States.  doi:https://doi.org/10.17188/1316480

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                    The Materials Project. 2020.  
"Materials Data on SrEu2Al2O7 by Materials Project".  United States.  doi:https://doi.org/10.17188/1316480.  https://www.osti.gov/servlets/purl/1316480. Pub date:Sun May 03 00:00:00 EDT 2020

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@article{osti_1316480,

  title        = {Materials Data on SrEu2Al2O7 by Materials Project},

  author       = {The Materials Project},

  abstractNote = {Eu2SrAl2O7 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 (2.66 Å) and eight longer (2.76 Å) Sr–O bond lengths. Eu3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Eu–O bond distances ranging from 2.34–2.68 Å. Al3+ is bonded to six O2- atoms to form 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 0–8°. There is five shorter (1.89 Å) and one longer (2.09 Å) Al–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Sr2+ and two equivalent Al3+ atoms to form a mixture of distorted edge and corner-sharing OSr4Al2 octahedra. The corner-sharing octahedral tilt angles are 0°. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Sr2+, two equivalent Eu3+, and two equivalent Al3+ atoms. In the third O2- site, O2- is bonded to five equivalent Eu3+ and one Al3+ atom to form distorted OEu5Al octahedra that share corners with five OSr4Al2 octahedra and edges with eight equivalent OEu5Al octahedra. The corner-sharing octahedra tilt angles range from 0–15°.},

  doi          = {10.17188/1316480},

  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/10.17188/1316480

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