Materials Data on Ho6Al43Cr4 by Materials Project

doi:10.17188/1662479

Title: Materials Data on Ho6Al43Cr4 by Materials Project

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Abstract

Ho6Cr4Al43 crystallizes in the hexagonal P6_3/mcm space group. The structure is three-dimensional. Ho is bonded in a 6-coordinate geometry to one Ho, one Cr, and fifteen Al atoms. The Ho–Ho bond length is 3.39 Å. The Ho–Cr bond length is 3.48 Å. There are a spread of Ho–Al bond distances ranging from 3.03–3.46 Å. There are two inequivalent Cr sites. In the first Cr site, Cr is bonded in a 12-coordinate geometry to two equivalent Ho and ten Al atoms. There are a spread of Cr–Al bond distances ranging from 2.56–2.66 Å. In the second Cr site, Cr is bonded to twelve Al atoms to form CrAl12 cuboctahedra that share edges with six equivalent AlAl10Cr2 cuboctahedra. There are six shorter (2.64 Å) and six longer (2.80 Å) Cr–Al bond lengths. There are seven inequivalent Al sites. In the first Al site, Al is bonded in a 12-coordinate geometry to one Ho, two Cr, and nine Al atoms. There are a spread of Al–Al bond distances ranging from 2.69–2.93 Å. In the second Al site, Al is bonded in a 12-coordinate geometry to four equivalent Ho and eight Al atoms. There are a spread of Al–Al bond distances ranging from 2.72–3.08more »« less

Authors:: The Materials Project

Publication Date:: 2020-04-29

Other Number(s):: mp-1199361

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; Ho6Al43Cr4; Al-Cr-Ho

OSTI Identifier:: 1662479

DOI:: https://doi.org/10.17188/1662479

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                    The Materials Project. Materials Data on Ho6Al43Cr4 by Materials Project.  United States: N. p., 2020. 
        Web.  doi:10.17188/1662479.

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                    The Materials Project. Materials Data on Ho6Al43Cr4 by Materials Project.  United States.  doi:https://doi.org/10.17188/1662479

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                    The Materials Project. 2020.  
"Materials Data on Ho6Al43Cr4 by Materials Project".  United States.  doi:https://doi.org/10.17188/1662479.  https://www.osti.gov/servlets/purl/1662479. Pub date:Wed Apr 29 00:00:00 EDT 2020

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@article{osti_1662479,

  title        = {Materials Data on Ho6Al43Cr4 by Materials Project},

  author       = {The Materials Project},

  abstractNote = {Ho6Cr4Al43 crystallizes in the hexagonal P6_3/mcm space group. The structure is three-dimensional. Ho is bonded in a 6-coordinate geometry to one Ho, one Cr, and fifteen Al atoms. The Ho–Ho bond length is 3.39 Å. The Ho–Cr bond length is 3.48 Å. There are a spread of Ho–Al bond distances ranging from 3.03–3.46 Å. There are two inequivalent Cr sites. In the first Cr site, Cr is bonded in a 12-coordinate geometry to two equivalent Ho and ten Al atoms. There are a spread of Cr–Al bond distances ranging from 2.56–2.66 Å. In the second Cr site, Cr is bonded to twelve Al atoms to form CrAl12 cuboctahedra that share edges with six equivalent AlAl10Cr2 cuboctahedra. There are six shorter (2.64 Å) and six longer (2.80 Å) Cr–Al bond lengths. There are seven inequivalent Al sites. In the first Al site, Al is bonded in a 12-coordinate geometry to one Ho, two Cr, and nine Al atoms. There are a spread of Al–Al bond distances ranging from 2.69–2.93 Å. In the second Al site, Al is bonded in a 12-coordinate geometry to four equivalent Ho and eight Al atoms. There are a spread of Al–Al bond distances ranging from 2.72–3.08 Å. In the third Al site, Al is bonded in a 12-coordinate geometry to two equivalent Ho, one Cr, and nine Al atoms. There are a spread of Al–Al bond distances ranging from 2.72–3.00 Å. In the fourth Al site, Al is bonded to two equivalent Cr and ten Al atoms to form distorted AlAl10Cr2 cuboctahedra that share corners with four equivalent AlHo3Al9 cuboctahedra, edges with two equivalent CrAl12 cuboctahedra, and faces with two equivalent AlAl10Cr2 cuboctahedra. Both Al–Al bond lengths are 2.74 Å. In the fifth Al site, Al is bonded in a 12-coordinate geometry to two equivalent Ho, one Cr, and nine Al atoms. Both Al–Al bond lengths are 2.95 Å. In the sixth Al site, Al is bonded to three equivalent Ho and nine Al atoms to form a mixture of face and corner-sharing AlHo3Al9 cuboctahedra. All Al–Al bond lengths are 2.80 Å. In the seventh Al site, Al is bonded in a 10-coordinate geometry to two equivalent Ho, one Cr, and seven Al atoms. The Al–Al bond length is 2.74 Å.},

  doi          = {10.17188/1662479},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {2020},

  month        = {4}

}

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DOI: https://doi.org/10.17188/1662479

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