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Title: Materials Data on Al8Cr5 by Materials Project

Abstract

Al8Cr5 is Bergman Structure: Mg32(Al,Zn)49 Bergman-derived structured and crystallizes in the trigonal R3m space group. The structure is three-dimensional. there are four inequivalent Cr sites. In the first Cr site, Cr is bonded in a 12-coordinate geometry to nine Cr and three equivalent Al atoms. There are a spread of Cr–Cr bond distances ranging from 2.30–2.71 Å. All Cr–Al bond lengths are 2.61 Å. In the second Cr site, Cr is bonded in a 12-coordinate geometry to six Cr and six Al atoms. There are three shorter (2.58 Å) and two longer (2.81 Å) Cr–Cr bond lengths. There are a spread of Cr–Al bond distances ranging from 2.51–2.72 Å. In the third Cr site, Cr is bonded in a 12-coordinate geometry to five Cr and seven Al atoms. Both Cr–Cr bond lengths are 2.82 Å. There are a spread of Cr–Al bond distances ranging from 2.55–2.64 Å. In the fourth Cr site, Cr is bonded in a 12-coordinate geometry to four Cr and eight Al atoms. There are a spread of Cr–Al bond distances ranging from 2.60–2.88 Å. There are five inequivalent Al sites. In the first Al site, Al is bonded in a distorted cuboctahedral geometry to three equivalentmore » Cr and nine Al atoms. There are a spread of Al–Al bond distances ranging from 2.68–2.77 Å. In the second Al site, Al is bonded in a 1-coordinate geometry to four Cr and nine Al atoms. There are a spread of Al–Al bond distances ranging from 2.62–3.04 Å. In the third Al site, Al is bonded in a 12-coordinate geometry to four Cr and eight Al atoms. There are a spread of Al–Al bond distances ranging from 2.71–2.86 Å. In the fourth Al site, Al is bonded in a 11-coordinate geometry to three Cr and eight Al atoms. Both Al–Al bond lengths are 2.92 Å. In the fifth Al site, Al is bonded in a 12-coordinate geometry to five Cr and six Al atoms. Both Al–Al bond lengths are 2.79 Å.« less

Authors:
Publication Date:
Other Number(s):
mp-19954
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; Al8Cr5; Al-Cr
OSTI Identifier:
1195138
DOI:
https://doi.org/10.17188/1195138

Citation Formats

The Materials Project. Materials Data on Al8Cr5 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1195138.
The Materials Project. Materials Data on Al8Cr5 by Materials Project. United States. doi:https://doi.org/10.17188/1195138
The Materials Project. 2020. "Materials Data on Al8Cr5 by Materials Project". United States. doi:https://doi.org/10.17188/1195138. https://www.osti.gov/servlets/purl/1195138. Pub date:Wed Jul 15 00:00:00 EDT 2020
@article{osti_1195138,
title = {Materials Data on Al8Cr5 by Materials Project},
author = {The Materials Project},
abstractNote = {Al8Cr5 is Bergman Structure: Mg32(Al,Zn)49 Bergman-derived structured and crystallizes in the trigonal R3m space group. The structure is three-dimensional. there are four inequivalent Cr sites. In the first Cr site, Cr is bonded in a 12-coordinate geometry to nine Cr and three equivalent Al atoms. There are a spread of Cr–Cr bond distances ranging from 2.30–2.71 Å. All Cr–Al bond lengths are 2.61 Å. In the second Cr site, Cr is bonded in a 12-coordinate geometry to six Cr and six Al atoms. There are three shorter (2.58 Å) and two longer (2.81 Å) Cr–Cr bond lengths. There are a spread of Cr–Al bond distances ranging from 2.51–2.72 Å. In the third Cr site, Cr is bonded in a 12-coordinate geometry to five Cr and seven Al atoms. Both Cr–Cr bond lengths are 2.82 Å. There are a spread of Cr–Al bond distances ranging from 2.55–2.64 Å. In the fourth Cr site, Cr is bonded in a 12-coordinate geometry to four Cr and eight Al atoms. There are a spread of Cr–Al bond distances ranging from 2.60–2.88 Å. There are five inequivalent Al sites. In the first Al site, Al is bonded in a distorted cuboctahedral geometry to three equivalent Cr and nine Al atoms. There are a spread of Al–Al bond distances ranging from 2.68–2.77 Å. In the second Al site, Al is bonded in a 1-coordinate geometry to four Cr and nine Al atoms. There are a spread of Al–Al bond distances ranging from 2.62–3.04 Å. In the third Al site, Al is bonded in a 12-coordinate geometry to four Cr and eight Al atoms. There are a spread of Al–Al bond distances ranging from 2.71–2.86 Å. In the fourth Al site, Al is bonded in a 11-coordinate geometry to three Cr and eight Al atoms. Both Al–Al bond lengths are 2.92 Å. In the fifth Al site, Al is bonded in a 12-coordinate geometry to five Cr and six Al atoms. Both Al–Al bond lengths are 2.79 Å.},
doi = {10.17188/1195138},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {7}
}