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Title: Materials Data on Sm2Ge2O7 by Materials Project

Abstract

Sm2Ge2O7 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Sm3+ is bonded to eight O2- atoms to form distorted SmO8 hexagonal bipyramids that share edges with six equivalent SmO8 hexagonal bipyramids and edges with six equivalent GeO6 octahedra. There are two shorter (2.20 Å) and six longer (2.53 Å) Sm–O bond lengths. Ge4+ is bonded to six equivalent O2- atoms to form GeO6 octahedra that share corners with six equivalent GeO6 octahedra and edges with six equivalent SmO8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 46°. All Ge–O bond lengths are 1.96 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Sm3+ and two equivalent Ge4+ atoms. In the second O2- site, O2- is bonded to four equivalent Sm3+ atoms to form corner-sharing OSm4 tetrahedra.

Publication Date:
Other Number(s):
mp-778114
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; Sm2Ge2O7; Ge-O-Sm
OSTI Identifier:
1305458
DOI:
10.17188/1305458

Citation Formats

The Materials Project. Materials Data on Sm2Ge2O7 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1305458.
The Materials Project. Materials Data on Sm2Ge2O7 by Materials Project. United States. doi:10.17188/1305458.
The Materials Project. 2020. "Materials Data on Sm2Ge2O7 by Materials Project". United States. doi:10.17188/1305458. https://www.osti.gov/servlets/purl/1305458. Pub date:Wed Jul 15 00:00:00 EDT 2020
@article{osti_1305458,
title = {Materials Data on Sm2Ge2O7 by Materials Project},
author = {The Materials Project},
abstractNote = {Sm2Ge2O7 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Sm3+ is bonded to eight O2- atoms to form distorted SmO8 hexagonal bipyramids that share edges with six equivalent SmO8 hexagonal bipyramids and edges with six equivalent GeO6 octahedra. There are two shorter (2.20 Å) and six longer (2.53 Å) Sm–O bond lengths. Ge4+ is bonded to six equivalent O2- atoms to form GeO6 octahedra that share corners with six equivalent GeO6 octahedra and edges with six equivalent SmO8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 46°. All Ge–O bond lengths are 1.96 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Sm3+ and two equivalent Ge4+ atoms. In the second O2- site, O2- is bonded to four equivalent Sm3+ atoms to form corner-sharing OSm4 tetrahedra.},
doi = {10.17188/1305458},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {7}
}

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