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Title: Materials Data on GdAlGe2O7 by Materials Project

Abstract

GdAlGe2O7 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Gd3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Gd–O bond distances ranging from 2.31–2.79 Å. Al3+ is bonded to five O2- atoms to form AlO5 trigonal bipyramids that share corners with five GeO4 tetrahedra. There are a spread of Al–O bond distances ranging from 1.80–1.95 Å. There are two inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share a cornercorner with one GeO4 tetrahedra and corners with two equivalent AlO5 trigonal bipyramids. There are a spread of Ge–O bond distances ranging from 1.73–1.80 Å. In the second Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share a cornercorner with one GeO4 tetrahedra and corners with three equivalent AlO5 trigonal bipyramids. There are a spread of Ge–O bond distances ranging from 1.76–1.83 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Gd3+, one Al3+, and one Ge4+ atom. In the second O2- site, O2- is bonded in a 2-coordinatemore » geometry to two equivalent Gd3+, one Al3+, and one Ge4+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to one Gd3+, one Al3+, and one Ge4+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to one Gd3+, one Al3+, and one Ge4+ atom. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Gd3+ and one Ge4+ atom. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Gd3+, one Al3+, and one Ge4+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Gd3+ and two Ge4+ atoms.« less

Publication Date:
Other Number(s):
mp-1212574
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; GdAlGe2O7; Al-Gd-Ge-O
OSTI Identifier:
1677927
DOI:
https://doi.org/10.17188/1677927

Citation Formats

The Materials Project. Materials Data on GdAlGe2O7 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1677927.
The Materials Project. Materials Data on GdAlGe2O7 by Materials Project. United States. doi:https://doi.org/10.17188/1677927
The Materials Project. 2020. "Materials Data on GdAlGe2O7 by Materials Project". United States. doi:https://doi.org/10.17188/1677927. https://www.osti.gov/servlets/purl/1677927. Pub date:Wed Apr 29 00:00:00 EDT 2020
@article{osti_1677927,
title = {Materials Data on GdAlGe2O7 by Materials Project},
author = {The Materials Project},
abstractNote = {GdAlGe2O7 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Gd3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Gd–O bond distances ranging from 2.31–2.79 Å. Al3+ is bonded to five O2- atoms to form AlO5 trigonal bipyramids that share corners with five GeO4 tetrahedra. There are a spread of Al–O bond distances ranging from 1.80–1.95 Å. There are two inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share a cornercorner with one GeO4 tetrahedra and corners with two equivalent AlO5 trigonal bipyramids. There are a spread of Ge–O bond distances ranging from 1.73–1.80 Å. In the second Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share a cornercorner with one GeO4 tetrahedra and corners with three equivalent AlO5 trigonal bipyramids. There are a spread of Ge–O bond distances ranging from 1.76–1.83 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to one Gd3+, one Al3+, and one Ge4+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent Gd3+, one Al3+, and one Ge4+ atom. In the third O2- site, O2- is bonded in a 2-coordinate geometry to one Gd3+, one Al3+, and one Ge4+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to one Gd3+, one Al3+, and one Ge4+ atom. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Gd3+ and one Ge4+ atom. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Gd3+, one Al3+, and one Ge4+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Gd3+ and two Ge4+ atoms.},
doi = {10.17188/1677927},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {4}
}