Crystal Structure of the Magnetoplumbite-Type Oxide NaFe3V9O19

✍ Scribed by Y. Kanke; F. Izumi; Y. Morii; S. Funahashi; K. Kato

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 315 KB
• Volume: 104
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.1993.1166

✦ Synopsis

The crystal structure of (\mathrm{NaFe}{3} \mathrm{~V}{9} \mathrm{O}{t 9}) (hexagonal, (P 6{3} / m m c, a=5.8388(1), c=22.8017(3) \AA) ) was determined by Rietveld refinements of both neutron and X-ray powder diffraction data. (\mathrm{NaFe}{3} \mathrm{~V}{9} \mathrm{O}{19}) crystallizes in the magnetoplumbite-type structure (\left(A M{12} \mathrm{O}{19}: A=\mathrm{Na}, M=\mathrm{Fe}\right.) and (\left.\mathrm{V}\right)). The (M(3)) site, which corresponds to the tetrahedral site of the spinel structure, is occupied exclusively by (\mathrm{Fe}). The rest of the (\mathrm{Fe}) cations are not concentrated at any particular (M(n)) sites. Structural details and cation distribution in (\mathrm{NaFe}{3} \mathrm{~V}{9} \mathrm{O}{19}) are discussed in comparison with those in related compounds. (1993 Academic Press, Inc.