Raman study of β-Sr0.33V2O5 micro-crystals under high pressure

• Published in: Physica status solidi. B. Basic research Vol. 244; no. 1; pp. 362 - 367
• Main Authors: Kontos, A. G., Lampakis, D., Popović, Z. V., Raptis, Y. S., Liarokapis, E., Isobe, M., Ueda, Y.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Berlin WILEY-VCH Verlag 01.01.2007; WILEY‐VCH Verlag; Wiley
• Subjects: 62.50.+p; 63.20.Dj; 71.27.+a; 71.30.+h; 78.30.Hv; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Exact sciences and technology; Infrared and raman spectra and scattering; Lattice dynamics; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Phonons in low-dimensional structures and small particles; Physics; Raman spectra; Strontium oxides; Vanadium oxides; Charge ordering; Hydrostatic pressure; Phonon mode; Bronze type compound; High pressure; Soft modes
• ISSN: 0370-1972; 1521-3951
• DOI: 10.1002/pssb.200672557

The phonon dynamics of the strontium vanadium oxide bronze (β‐Sr0.33V2O5) 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)