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Title: Materials Data on HfMg6Ni by Materials Project

Abstract

Mg6HfNi crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. there are four inequivalent Mg sites. In the first Mg site, Mg is bonded to eight Mg, two equivalent Hf, and two equivalent Ni atoms to form distorted MgHf2Mg8Ni2 cuboctahedra that share corners with four equivalent HfMg10Ni2 cuboctahedra, corners with four equivalent NiHf2Mg10 cuboctahedra, corners with ten equivalent MgHf2Mg8Ni2 cuboctahedra, edges with two equivalent HfMg10Ni2 cuboctahedra, edges with two equivalent NiHf2Mg10 cuboctahedra, edges with six MgHf2Mg8Ni2 cuboctahedra, faces with two equivalent HfMg10Ni2 cuboctahedra, faces with two equivalent NiHf2Mg10 cuboctahedra, and faces with six MgHf2Mg8Ni2 cuboctahedra. There are a spread of Mg–Mg bond distances ranging from 2.92–3.07 Å. There are one shorter (3.08 Å) and one longer (3.15 Å) Mg–Hf bond lengths. There are one shorter (3.05 Å) and one longer (3.17 Å) Mg–Ni bond lengths. In the second Mg site, Mg is bonded in a 12-coordinate geometry to four Mg, two equivalent Hf, and two equivalent Ni atoms. There are one shorter (3.07 Å) and one longer (3.15 Å) Mg–Mg bond lengths. Both Mg–Hf bond lengths are 3.03 Å. Both Mg–Ni bond lengths are 2.96 Å. In the third Mg site, Mg is bonded in a 2-coordinate geometrymore » to six Mg and two equivalent Ni atoms. Both Mg–Mg bond lengths are 2.97 Å. Both Mg–Ni bond lengths are 2.99 Å. In the fourth Mg site, Mg is bonded to ten Mg and two equivalent Hf atoms to form MgHf2Mg10 cuboctahedra that share corners with six equivalent MgHf2Mg10 cuboctahedra, edges with four equivalent HfMg10Ni2 cuboctahedra, edges with eight equivalent MgHf2Mg8Ni2 cuboctahedra, faces with two equivalent HfMg10Ni2 cuboctahedra, faces with six MgHf2Mg8Ni2 cuboctahedra, and faces with six equivalent NiHf2Mg10 cuboctahedra. Both Mg–Hf bond lengths are 3.00 Å. Hf is bonded to ten Mg and two equivalent Ni atoms to form distorted HfMg10Ni2 cuboctahedra that share corners with four equivalent NiHf2Mg10 cuboctahedra, corners with six equivalent HfMg10Ni2 cuboctahedra, corners with eight equivalent MgHf2Mg8Ni2 cuboctahedra, edges with two equivalent NiHf2Mg10 cuboctahedra, edges with eight MgHf2Mg8Ni2 cuboctahedra, faces with two equivalent HfMg10Ni2 cuboctahedra, faces with two equivalent NiHf2Mg10 cuboctahedra, and faces with six MgHf2Mg8Ni2 cuboctahedra. Both Hf–Ni bond lengths are 2.97 Å. Ni is bonded to ten Mg and two equivalent Hf atoms to form NiHf2Mg10 cuboctahedra that share corners with four equivalent HfMg10Ni2 cuboctahedra, corners with six equivalent NiHf2Mg10 cuboctahedra, corners with eight equivalent MgHf2Mg8Ni2 cuboctahedra, edges with two equivalent HfMg10Ni2 cuboctahedra, edges with four equivalent MgHf2Mg8Ni2 cuboctahedra, faces with two equivalent HfMg10Ni2 cuboctahedra, faces with two equivalent NiHf2Mg10 cuboctahedra, and faces with ten MgHf2Mg8Ni2 cuboctahedra.« less

Publication Date:
Other Number(s):
mp-1099293
DOE Contract Number:  
AC02-05CH11231; EDCBEE
Product Type:
Dataset
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)
Subject:
36 MATERIALS SCIENCE
Keywords:
crystal structure; HfMg6Ni; Hf-Mg-Ni
OSTI Identifier:
1753082
DOI:
https://doi.org/10.17188/1753082

Citation Formats

The Materials Project. Materials Data on HfMg6Ni by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1753082.
The Materials Project. Materials Data on HfMg6Ni by Materials Project. United States. doi:https://doi.org/10.17188/1753082
The Materials Project. 2020. "Materials Data on HfMg6Ni by Materials Project". United States. doi:https://doi.org/10.17188/1753082. https://www.osti.gov/servlets/purl/1753082. Pub date:Sat May 02 00:00:00 EDT 2020
@article{osti_1753082,
title = {Materials Data on HfMg6Ni by Materials Project},
author = {The Materials Project},
abstractNote = {Mg6HfNi crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. there are four inequivalent Mg sites. In the first Mg site, Mg is bonded to eight Mg, two equivalent Hf, and two equivalent Ni atoms to form distorted MgHf2Mg8Ni2 cuboctahedra that share corners with four equivalent HfMg10Ni2 cuboctahedra, corners with four equivalent NiHf2Mg10 cuboctahedra, corners with ten equivalent MgHf2Mg8Ni2 cuboctahedra, edges with two equivalent HfMg10Ni2 cuboctahedra, edges with two equivalent NiHf2Mg10 cuboctahedra, edges with six MgHf2Mg8Ni2 cuboctahedra, faces with two equivalent HfMg10Ni2 cuboctahedra, faces with two equivalent NiHf2Mg10 cuboctahedra, and faces with six MgHf2Mg8Ni2 cuboctahedra. There are a spread of Mg–Mg bond distances ranging from 2.92–3.07 Å. There are one shorter (3.08 Å) and one longer (3.15 Å) Mg–Hf bond lengths. There are one shorter (3.05 Å) and one longer (3.17 Å) Mg–Ni bond lengths. In the second Mg site, Mg is bonded in a 12-coordinate geometry to four Mg, two equivalent Hf, and two equivalent Ni atoms. There are one shorter (3.07 Å) and one longer (3.15 Å) Mg–Mg bond lengths. Both Mg–Hf bond lengths are 3.03 Å. Both Mg–Ni bond lengths are 2.96 Å. In the third Mg site, Mg is bonded in a 2-coordinate geometry to six Mg and two equivalent Ni atoms. Both Mg–Mg bond lengths are 2.97 Å. Both Mg–Ni bond lengths are 2.99 Å. In the fourth Mg site, Mg is bonded to ten Mg and two equivalent Hf atoms to form MgHf2Mg10 cuboctahedra that share corners with six equivalent MgHf2Mg10 cuboctahedra, edges with four equivalent HfMg10Ni2 cuboctahedra, edges with eight equivalent MgHf2Mg8Ni2 cuboctahedra, faces with two equivalent HfMg10Ni2 cuboctahedra, faces with six MgHf2Mg8Ni2 cuboctahedra, and faces with six equivalent NiHf2Mg10 cuboctahedra. Both Mg–Hf bond lengths are 3.00 Å. Hf is bonded to ten Mg and two equivalent Ni atoms to form distorted HfMg10Ni2 cuboctahedra that share corners with four equivalent NiHf2Mg10 cuboctahedra, corners with six equivalent HfMg10Ni2 cuboctahedra, corners with eight equivalent MgHf2Mg8Ni2 cuboctahedra, edges with two equivalent NiHf2Mg10 cuboctahedra, edges with eight MgHf2Mg8Ni2 cuboctahedra, faces with two equivalent HfMg10Ni2 cuboctahedra, faces with two equivalent NiHf2Mg10 cuboctahedra, and faces with six MgHf2Mg8Ni2 cuboctahedra. Both Hf–Ni bond lengths are 2.97 Å. Ni is bonded to ten Mg and two equivalent Hf atoms to form NiHf2Mg10 cuboctahedra that share corners with four equivalent HfMg10Ni2 cuboctahedra, corners with six equivalent NiHf2Mg10 cuboctahedra, corners with eight equivalent MgHf2Mg8Ni2 cuboctahedra, edges with two equivalent HfMg10Ni2 cuboctahedra, edges with four equivalent MgHf2Mg8Ni2 cuboctahedra, faces with two equivalent HfMg10Ni2 cuboctahedra, faces with two equivalent NiHf2Mg10 cuboctahedra, and faces with ten MgHf2Mg8Ni2 cuboctahedra.},
doi = {10.17188/1753082},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {5}
}