Raman scattering in CuGe1-xSixO3

Devic, SD; Popovic, ZV; Raptis, Y; Dhalenne, G; Revcolevschi, A

dc.contributor.author	Devic, SD	en
dc.contributor.author	Popovic, ZV	en
dc.contributor.author	Raptis, Y	en
dc.contributor.author	Dhalenne, G	en
dc.contributor.author	Revcolevschi, A	en
dc.date.accessioned	2014-03-01T01:47:26Z
dc.date.available	2014-03-01T01:47:26Z
dc.date.issued	1998	en
dc.identifier.issn	10120394	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/25210
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-17344369622&partnerID=40&md5=f4c56273279d7f29d68589f7fd523b9b	en
dc.subject	Impurity mdes	en
dc.subject	Raman sattering	en
dc.subject	Spin-Peieris transition	en
dc.subject.other	Crystal impurities	en
dc.subject.other	Mathematical models	en
dc.subject.other	Phase transitions	en
dc.subject.other	Raman scattering	en
dc.subject.other	Raman spectroscopy	en
dc.subject.other	Spin-Peierls transitions	en
dc.subject.other	Copper oxides	en
dc.title	Raman scattering in CuGe1-xSixO3	en
heal.type	journalArticle	en
heal.publicationDate	1998	en
heal.abstract	We present the nonpolarized Raman scattering spectra of CuGe1-xSixO3 (x=0.1 and 0.2) at room temperature. The presence of Si impurity in these samples suppresses the spin-Peierls transition that occurs at 14K in the pure compound. In addition to the impurity mode at 670 cm-1, we observed two new modes at 799 and 938 cm-1. The intensity of all three modes increases with increasing Si content. The appearance and nature of these new modes are discussed in accordance with the existing normal coordinate analysis as well as the results obtained from the shell model calculation for this compound.	en
heal.journalName	Diffusion and Defect Data Pt.B: Solid State Phenomena	en
dc.identifier.volume	61-62	en
dc.identifier.spage	317	en
dc.identifier.epage	320	en