Premium
Raman study of β‐Sr 0.33 V 2 O 5 micro‐crystals under high pressure
Author(s) -
Kontos A. G.,
Lampakis D.,
Popović Z. V.,
Raptis Y. S.,
Liarokapis E.,
Isobe M.,
Ueda Y.
Publication year - 2007
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.200672557
Subject(s) - raman spectroscopy , softening , hydrostatic pressure , materials science , strontium , phonon , bronze , phase (matter) , oxide , high pressure , vanadium , phase transition , analytical chemistry (journal) , mineralogy , condensed matter physics , chemistry , metallurgy , thermodynamics , composite material , optics , physics , organic chemistry , chromatography
The phonon dynamics of the strontium vanadium oxide bronze (β‐Sr 0.33 V 2 O 5 ) is studied using Raman spectroscopy at different temperature under high pressure up to 5.7 GPa. Interesting features of the spectra, such as the narrowing of some modes that harden under pressure (250–300 cm –1 ) or the softening of a low‐frequency mode, are presented and discussed. Our low temperature measurements confirm that under high hydrostatic pressure the charge ordered phase is suppressed. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)