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Title: Materials Data on Gd3AsO7 by Materials Project

Abstract

Gd3AsO7 crystallizes in the orthorhombic C222_1 space group. The structure is three-dimensional. there are two inequivalent Gd3+ sites. In the first Gd3+ site, Gd3+ is bonded to seven O2- atoms to form distorted GdO7 pentagonal bipyramids that share corners with two equivalent AsO6 octahedra, a cornercorner with one GdO7 pentagonal bipyramid, edges with two equivalent AsO6 octahedra, and edges with three equivalent GdO7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 43–45°. There are a spread of Gd–O bond distances ranging from 2.23–2.52 Å. In the second Gd3+ site, Gd3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are a spread of Gd–O bond distances ranging from 2.31–2.80 Å. As5+ is bonded to six O2- atoms to form AsO6 octahedra that share corners with two equivalent AsO6 octahedra, corners with four equivalent GdO7 pentagonal bipyramids, and edges with four equivalent GdO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 36°. There are a spread of As–O bond distances ranging from 1.85–1.96 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Gd3+ and two equivalent As5+ atoms. In the second O2- site,more » O2- is bonded to four Gd3+ atoms to form a mixture of corner and edge-sharing OGd4 tetrahedra. In the third O2- site, O2- is bonded in a 4-coordinate geometry to three Gd3+ and one As5+ atom. In the fourth O2- site, O2- is bonded to four Gd3+ atoms to form a mixture of corner and edge-sharing OGd4 tetrahedra. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to three Gd3+ and one As5+ atom.« less

Publication Date:
Other Number(s):
mp-767398
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; Gd3AsO7; As-Gd-O
OSTI Identifier:
1297576
DOI:
10.17188/1297576

Citation Formats

The Materials Project. Materials Data on Gd3AsO7 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1297576.
The Materials Project. Materials Data on Gd3AsO7 by Materials Project. United States. doi:10.17188/1297576.
The Materials Project. 2020. "Materials Data on Gd3AsO7 by Materials Project". United States. doi:10.17188/1297576. https://www.osti.gov/servlets/purl/1297576. Pub date:Wed Apr 29 00:00:00 EDT 2020
@article{osti_1297576,
title = {Materials Data on Gd3AsO7 by Materials Project},
author = {The Materials Project},
abstractNote = {Gd3AsO7 crystallizes in the orthorhombic C222_1 space group. The structure is three-dimensional. there are two inequivalent Gd3+ sites. In the first Gd3+ site, Gd3+ is bonded to seven O2- atoms to form distorted GdO7 pentagonal bipyramids that share corners with two equivalent AsO6 octahedra, a cornercorner with one GdO7 pentagonal bipyramid, edges with two equivalent AsO6 octahedra, and edges with three equivalent GdO7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 43–45°. There are a spread of Gd–O bond distances ranging from 2.23–2.52 Å. In the second Gd3+ site, Gd3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are a spread of Gd–O bond distances ranging from 2.31–2.80 Å. As5+ is bonded to six O2- atoms to form AsO6 octahedra that share corners with two equivalent AsO6 octahedra, corners with four equivalent GdO7 pentagonal bipyramids, and edges with four equivalent GdO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 36°. There are a spread of As–O bond distances ranging from 1.85–1.96 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Gd3+ and two equivalent As5+ atoms. In the second O2- site, O2- is bonded to four Gd3+ atoms to form a mixture of corner and edge-sharing OGd4 tetrahedra. In the third O2- site, O2- is bonded in a 4-coordinate geometry to three Gd3+ and one As5+ atom. In the fourth O2- site, O2- is bonded to four Gd3+ atoms to form a mixture of corner and edge-sharing OGd4 tetrahedra. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to three Gd3+ and one As5+ atom.},
doi = {10.17188/1297576},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {4}
}

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