High-temperature Raman and DSC studies of ternary floppy chalcogenide glasses

Stavrou, E; Adamaki, V; Sotiriou, G; Kripotou, S; Raptis, C

dc.contributor.author	Stavrou, E	en
dc.contributor.author	Adamaki, V	en
dc.contributor.author	Sotiriou, G	en
dc.contributor.author	Kripotou, S	en
dc.contributor.author	Raptis, C	en
dc.date.accessioned	2014-03-01T02:44:39Z
dc.date.available	2014-03-01T02:44:39Z
dc.date.issued	2007	en
dc.identifier.issn	1454-4164	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/31931
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-38549094813&partnerID=40&md5=77cfb6a3ade60bd7eeb9c051ad09c102	en
dc.subject	Boson peak	en
dc.subject	Chalcogenide glasses	en
dc.subject	Raman spectroscopy	en
dc.subject	Temperature dependence	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Optics	en
dc.subject.classification	Physics, Applied	en
dc.subject.other	SCATTERING	en
dc.subject.other	DYNAMICS	en
dc.subject.other	FORMERS	en
dc.subject.other	FILMS	en
dc.title	High-temperature Raman and DSC studies of ternary floppy chalcogenide glasses	en
heal.type	conferenceItem	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	The Raman scattering spectra of two ternary floppy (Z < 2.4) Ge-As-S chalcogenide glasses have been measured over temperatures ranging from 20 K, through the respective glass transition temperature Tg and up to a temperature close to melting point. Additional Differential Scanning Calorimetry (DSC) measurements have been carried out in these glasses at high temperatures from which values of Tg have been determined. The purpose of this work is twofold: (i) to study, through the Raman spectra and in particular the Boson peak (BP), critical phenomena around the Tg and make comparisons with the results obtained by DSC, and (ii) to make overall comparisons of the present Raman results and conclusions with those reported in a previous Raman study [Boulmetis et al, J. Optoelectron. Adv. Mater. 7, 1209 (2005)] on rigid (Z > 2.4) Ge-As-S glasses. It has been found that the study of the Boson peak is a reliable technique for predicting and determining the onset of the transition to the supercooled liquid phase in floppy chalcogenide glasses.	en
heal.publisher	NATL INST OPTOELECTRONICS	en
heal.journalName	Journal of Optoelectronics and Advanced Materials	en
dc.identifier.isi	ISI:000250711500025	en
dc.identifier.volume	9	en
dc.identifier.issue	10	en
dc.identifier.spage	3103	en
dc.identifier.epage	3107	en