U.S. Department of EnergyOffice of Scientific and Technical Information
Materials Data on CrGa3(FeSe4)2 by Materials Project
Abstract
CrGa3(FeSe4)2 crystallizes in the monoclinic Pm space group. The structure is two-dimensional and consists of one CrGa3(FeSe4)2 sheet oriented in the (0, 0, 1) direction. Cr3+ is bonded to four Se2- atoms to form CrSe4 tetrahedra that share corners with three GaSe6 octahedra, corners with two equivalent CrSe4 tetrahedra, and corners with four equivalent GaSe4 tetrahedra. The corner-sharing octahedral tilt angles are 57°. There are a spread of Cr–Se bond distances ranging from 2.43–2.50 Å. There are two inequivalent Fe2+ sites. In the first Fe2+ site, Fe2+ is bonded to four Se2- atoms to form FeSe4 tetrahedra that share corners with three GaSe6 octahedra and corners with six FeSe4 tetrahedra. The corner-sharing octahedra tilt angles range from 57–58°. There are a spread of Fe–Se bond distances ranging from 2.37–2.42 Å. In the second Fe2+ site, Fe2+ is bonded to four Se2- atoms to form FeSe4 tetrahedra that share corners with three GaSe6 octahedra and corners with six FeSe4 tetrahedra. The corner-sharing octahedral tilt angles are 58°. There are a spread of Fe–Se bond distances ranging from 2.38–2.43 Å. There are three inequivalent Ga3+ sites. In the first Ga3+ site, Ga3+ is bonded to six Se2- atoms to form GaSe6 octahedramore »
- Authors:
- Publication Date:
- Other Number(s):
- mp-1226260
- 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; CrGa3(FeSe4)2; Cr-Fe-Ga-Se
- OSTI Identifier:
- 1746756
- DOI:
- https://doi.org/10.17188/1746756
Citation Formats
The Materials Project. Materials Data on CrGa3(FeSe4)2 by Materials Project. United States: N. p., 2020.
Web. doi:10.17188/1746756.
The Materials Project. Materials Data on CrGa3(FeSe4)2 by Materials Project. United States. doi:https://doi.org/10.17188/1746756
The Materials Project. 2020.
"Materials Data on CrGa3(FeSe4)2 by Materials Project". United States. doi:https://doi.org/10.17188/1746756. https://www.osti.gov/servlets/purl/1746756. Pub date:Sat May 02 00:00:00 EDT 2020
@article{osti_1746756,
title = {Materials Data on CrGa3(FeSe4)2 by Materials Project},
author = {The Materials Project},
abstractNote = {CrGa3(FeSe4)2 crystallizes in the monoclinic Pm space group. The structure is two-dimensional and consists of one CrGa3(FeSe4)2 sheet oriented in the (0, 0, 1) direction. Cr3+ is bonded to four Se2- atoms to form CrSe4 tetrahedra that share corners with three GaSe6 octahedra, corners with two equivalent CrSe4 tetrahedra, and corners with four equivalent GaSe4 tetrahedra. The corner-sharing octahedral tilt angles are 57°. There are a spread of Cr–Se bond distances ranging from 2.43–2.50 Å. There are two inequivalent Fe2+ sites. In the first Fe2+ site, Fe2+ is bonded to four Se2- atoms to form FeSe4 tetrahedra that share corners with three GaSe6 octahedra and corners with six FeSe4 tetrahedra. The corner-sharing octahedra tilt angles range from 57–58°. There are a spread of Fe–Se bond distances ranging from 2.37–2.42 Å. In the second Fe2+ site, Fe2+ is bonded to four Se2- atoms to form FeSe4 tetrahedra that share corners with three GaSe6 octahedra and corners with six FeSe4 tetrahedra. The corner-sharing octahedral tilt angles are 58°. There are a spread of Fe–Se bond distances ranging from 2.38–2.43 Å. There are three inequivalent Ga3+ sites. In the first Ga3+ site, Ga3+ is bonded to six Se2- atoms to form GaSe6 octahedra that share a cornercorner with one CrSe4 tetrahedra, corners with two equivalent GaSe4 tetrahedra, corners with three FeSe4 tetrahedra, and edges with six GaSe6 octahedra. There are a spread of Ga–Se bond distances ranging from 2.63–2.67 Å. In the second Ga3+ site, Ga3+ is bonded to six Se2- atoms to form GaSe6 octahedra that share a cornercorner with one GaSe4 tetrahedra, corners with two equivalent CrSe4 tetrahedra, corners with three FeSe4 tetrahedra, and edges with six GaSe6 octahedra. There are a spread of Ga–Se bond distances ranging from 2.63–2.67 Å. In the third Ga3+ site, Ga3+ is bonded to four Se2- atoms to form GaSe4 tetrahedra that share corners with three GaSe6 octahedra, corners with two equivalent GaSe4 tetrahedra, and corners with four equivalent CrSe4 tetrahedra. The corner-sharing octahedral tilt angles are 57°. There are two shorter (2.45 Å) and two longer (2.46 Å) Ga–Se bond lengths. There are eight inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a trigonal non-coplanar geometry to two equivalent Cr3+ and one Ga3+ atom. In the second Se2- site, Se2- is bonded in a trigonal non-coplanar geometry to one Cr3+ and two equivalent Ga3+ atoms. In the third Se2- site, Se2- is bonded in a trigonal non-coplanar geometry to three Fe2+ atoms. In the fourth Se2- site, Se2- is bonded in a trigonal non-coplanar geometry to three Fe2+ atoms. In the fifth Se2- site, Se2- is bonded in a distorted rectangular see-saw-like geometry to four Ga3+ atoms. In the sixth Se2- site, Se2- is bonded in a distorted rectangular see-saw-like geometry to one Cr3+ and three Ga3+ atoms. In the seventh Se2- site, Se2- is bonded in a distorted rectangular see-saw-like geometry to one Fe2+ and three Ga3+ atoms. In the eighth Se2- site, Se2- is bonded to one Fe2+ and three Ga3+ atoms to form distorted corner-sharing SeGa3Fe trigonal pyramids.},
doi = {10.17188/1746756},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {5}
}