A study of phase transition in (NH 4 ) 3 WO 3 F 3  oxyfluoride by Raman scattering | Zendy

Krylov A. S. | Zendy; Gerasimova J. V. | Zendy; Vtyurin A. N. | Zendy; Fokina V. D. | Zendy; Laptash N. M. | Zendy; Voyt E. I. | Zendy

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A study of phase transition in (NH 4 ) 3 WO 3 F 3 oxyfluoride by Raman scattering

Author(s) -

Krylov A. S.,

Gerasimova J. V.,

Vtyurin A. N.,

Fokina V. D.,

Laptash N. M.,

Voyt E. I.

Publication year - 2006

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.200541259

Subject(s) - octahedron , raman scattering , raman spectroscopy , phase transition , ion , perovskite (structure) , materials science , crystallography , phase (matter) , scattering , condensed matter physics , analytical chemistry (journal) , chemistry , crystal structure , physics , optics , organic chemistry , chromatography

Raman scattering spectra of perovskite‐like (NH 4 ) 3 WO 3 F 3 oxyfluoride are studied in the 70–3600 cm –1 frequency range and the 93–323 K temperature range including the transition point from orientationally disordered cubic phase into the lower symmetry one. Internal vibrations of ammonium ions and WO 3 F 3 octahedra have been found to exhibit transition anomalies. Analysis of measurements suggests that the transition under study is due mainly to the ordering of octahedra. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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