Materials Data on Nb3FeSe6 by Materials Project

Dataset · Sat May 02 04:00:00 EDT 2020

DOI:https://doi.org/10.17188/1676954· OSTI ID:1676954

Nb3FeSe6 is Ilmenite-like structured and crystallizes in the hexagonal P6_322 space group. The structure is three-dimensional. there are two inequivalent Nb3+ sites. In the first Nb3+ site, Nb3+ is bonded to six equivalent Se2- atoms to form distorted NbSe6 pentagonal pyramids that share corners with six equivalent FeSe6 octahedra and edges with six equivalent NbSe6 pentagonal pyramids. The corner-sharing octahedral tilt angles are 47°. All Nb–Se bond lengths are 2.62 Å. In the second Nb3+ site, Nb3+ is bonded to six equivalent Se2- atoms to form distorted NbSe6 pentagonal pyramids that share corners with three equivalent FeSe6 octahedra, edges with six NbSe6 pentagonal pyramids, and a faceface with one FeSe6 octahedra. The corner-sharing octahedral tilt angles are 47°. There are three shorter (2.63 Å) and three longer (2.64 Å) Nb–Se bond lengths. Fe3+ is bonded to six equivalent Se2- atoms to form FeSe6 octahedra that share corners with twelve NbSe6 pentagonal pyramids and faces with two equivalent NbSe6 pentagonal pyramids. All Fe–Se bond lengths are 2.52 Å. Se2- is bonded in a distorted rectangular see-saw-like geometry to three Nb3+ and one Fe3+ atom.

• Research Organization: LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• Contributing Organization: The Materials Project; MIT; UC Berkeley; Duke; U Louvain
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1676954
• Report Number(s): mp-1190037
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Fe-Nb-Se
Nb3FeSe6
crystal structure