Raman scattering study of β-Sr0.33V2O5 in charge disordered and ordered phase

Popovic, ZV; Kontos, AG; Raptis, YS; Isobe, M; Ueda, Y

dc.contributor.author	Popovic, ZV	en
dc.contributor.author	Kontos, AG	en
dc.contributor.author	Raptis, YS	en
dc.contributor.author	Isobe, M	en
dc.contributor.author	Ueda, Y	en
dc.date.accessioned	2014-03-01T01:25:02Z
dc.date.available	2014-03-01T01:25:02Z
dc.date.issued	2006	en
dc.identifier.issn	0953-8984	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17514
dc.subject	Raman Scattering	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	Electric space charge	en
dc.subject.other	Electrons	en
dc.subject.other	Order disorder transitions	en
dc.subject.other	Phase transitions	en
dc.subject.other	Phonons	en
dc.subject.other	Raman scattering	en
dc.subject.other	Spectrum analysis	en
dc.subject.other	Thermal effects	en
dc.subject.other	Charge disordered and ordered phase	en
dc.subject.other	Charge-phonon dynamics	en
dc.subject.other	Delocalized	en
dc.subject.other	Raman scattering spectra	en
dc.subject.other	Strontium compounds	en
dc.title	Raman scattering study of β-Sr0.33V2O5 in charge disordered and ordered phase	en
heal.type	journalArticle	en
heal.identifier.primary	10.1088/0953-8984/18/32/024	en
heal.identifier.secondary	http://dx.doi.org/10.1088/0953-8984/18/32/024	en
heal.identifier.secondary	024	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	Polarized Raman spectra of the strontium vanadium oxide bronze β-Sr0.33V2O5 are measured in the temperature range between 300 and 77K. The charge ordering phase transition at about 165K is characterized by the appearance of new Raman-active modes in the spectra, as well as through an abrupt change of the phonon frequencies and dampings. The Raman scattering spectra of β-Sr0.33V2O5 in the charge disordered phase are in apparent resemblance with those of α′-NaV2O5, which suggests that there is a similar charge-phonon dynamics in both compounds. We also suggest that the electrons are delocalized into V1-O5-V3 orbitals in the mixed valence state of β-Sr0.33V2O5. © 2006 IOP Publishing Ltd.	en
heal.publisher	IOP PUBLISHING LTD	en
heal.journalName	Journal of Physics Condensed Matter	en
dc.identifier.doi	10.1088/0953-8984/18/32/024	en
dc.identifier.isi	ISI:000239558500029	en
dc.identifier.volume	18	en
dc.identifier.issue	32	en
dc.identifier.spage	7779	en
dc.identifier.epage	7787	en