Solid State Communications vol:142 issue:7 pages:385-388
date:Ctr Solid State Phys & New Mat, Inst Phys, Belgrade 11080, Serbia; Catholic Univ Louvain, Lab Solid State Phys & Magnetism, B-3001 Louvain, Belgium; Univ Tokyo, Inst Solid State Phys, Mat Design & Characterizat Lab, Kashiwa, Chiba 2778581, Japan
Polarized Raman spectra of sodium vanadium oxide eta-Na1.3V2O5 single crystals were measured over wide temperature and frequency ranges. In total 27 first-order Raman modes, as well as overtones and combinational lines, are observed. For the charge ordered phase no appearances of new phonon- or spin-related Raman modes are registered on lowering the temperature to 10 K. The phase transition at about 100 K is manifested through an abrupt change of the phonon mode frequencies and dampings. (c) 2007 Elsevier Ltd. All rights reserved.