U.S. Department of EnergyOffice of Scientific and Technical Information
Materials Data on HoFeGe2O7 by Materials Project
Abstract
HoFeGe2O7 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. Ho3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ho–O bond distances ranging from 2.22–2.43 Å. Fe3+ is bonded to six O2- atoms to form distorted FeO6 octahedra that share corners with four GeO4 tetrahedra and an edgeedge with one FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.99–2.16 Å. There are four inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with four equivalent FeO6 octahedra. The corner-sharing octahedra tilt angles range from 45–54°. There are a spread of Ge–O bond distances ranging from 1.78–1.80 Å. In the second Ge4+ site, Ge4+ is bonded in a 4-coordinate geometry to five O2- atoms. There are a spread of Ge–O bond distances ranging from 1.75–2.37 Å. In the third Ge4+ site, Ge4+ is bonded in a 4-coordinate geometry to five O2- atoms. There are a spread of Ge–O bond distances ranging from 1.75–2.40 Å. In the fourth Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with fourmore »
- Authors:
- Publication Date:
- Other Number(s):
- mp-1212190
- 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; HoFeGe2O7; Fe-Ge-Ho-O
- OSTI Identifier:
- 1689740
- DOI:
- https://doi.org/10.17188/1689740
Citation Formats
The Materials Project. Materials Data on HoFeGe2O7 by Materials Project. United States: N. p., 2020.
Web. doi:10.17188/1689740.
The Materials Project. Materials Data on HoFeGe2O7 by Materials Project. United States. doi:https://doi.org/10.17188/1689740
The Materials Project. 2020.
"Materials Data on HoFeGe2O7 by Materials Project". United States. doi:https://doi.org/10.17188/1689740. https://www.osti.gov/servlets/purl/1689740. Pub date:Wed Apr 29 00:00:00 EDT 2020
@article{osti_1689740,
title = {Materials Data on HoFeGe2O7 by Materials Project},
author = {The Materials Project},
abstractNote = {HoFeGe2O7 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. Ho3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ho–O bond distances ranging from 2.22–2.43 Å. Fe3+ is bonded to six O2- atoms to form distorted FeO6 octahedra that share corners with four GeO4 tetrahedra and an edgeedge with one FeO6 octahedra. There are a spread of Fe–O bond distances ranging from 1.99–2.16 Å. There are four inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with four equivalent FeO6 octahedra. The corner-sharing octahedra tilt angles range from 45–54°. There are a spread of Ge–O bond distances ranging from 1.78–1.80 Å. In the second Ge4+ site, Ge4+ is bonded in a 4-coordinate geometry to five O2- atoms. There are a spread of Ge–O bond distances ranging from 1.75–2.37 Å. In the third Ge4+ site, Ge4+ is bonded in a 4-coordinate geometry to five O2- atoms. There are a spread of Ge–O bond distances ranging from 1.75–2.40 Å. In the fourth Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with four equivalent FeO6 octahedra. The corner-sharing octahedra tilt angles range from 45–54°. There are a spread of Ge–O bond distances ranging from 1.78–1.80 Å. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Ho3+, one Fe3+, and one Ge4+ atom. In the second O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Ho3+, one Fe3+, and one Ge4+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Ho3+, one Fe3+, and one Ge4+ atom. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to two Ge4+ atoms. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to two Ge4+ atoms. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Fe3+ and two Ge4+ atoms. In the seventh O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Ho3+ and one Ge4+ atom. In the eighth O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Ho3+ and one Ge4+ atom. In the ninth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Fe3+ and two Ge4+ atoms. In the tenth O2- site, O2- is bonded in a 3-coordinate geometry to one Ho3+, one Fe3+, and one Ge4+ atom.},
doi = {10.17188/1689740},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Apr 29 00:00:00 EDT 2020},
month = {Wed Apr 29 00:00:00 EDT 2020}
}