Effects of pressure on the boson peak of tellurite (TeO2) 1-x(ZnO)x glasses: Evidence of an elastic glass-to-glass transition

Stavrou, E; Raptis, C; Syassen, K

dc.contributor.author	Stavrou, E	en
dc.contributor.author	Raptis, C	en
dc.contributor.author	Syassen, K	en
dc.date.accessioned	2014-03-01T01:33:20Z
dc.date.available	2014-03-01T01:33:20Z
dc.date.issued	2010	en
dc.identifier.issn	10980121	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20379
dc.subject	Glass Transition	en
dc.title	Effects of pressure on the boson peak of tellurite (TeO2) 1-x(ZnO)x glasses: Evidence of an elastic glass-to-glass transition	en
heal.type	journalArticle	en
heal.identifier.primary	10.1103/PhysRevB.81.174202	en
heal.identifier.secondary	174202	en
heal.identifier.secondary	http://dx.doi.org/10.1103/PhysRevB.81.174202	en
heal.publicationDate	2010	en
heal.abstract	The Raman spectra of three (TeO2)1-x(ZnO)x (x=0.1, 0.2, and 0.4) glasses have been measured under pressure up to 13 GPa. We report an unusual pressure dependence of the Boson peak frequency which is quite different from that observed in relevant experiments for other network glasses or predicted by theory. The unexpected observed effect indicates that tellurite glasses respond like elastic, rather than plastic, media to both compression and decompression treatments. We suggest that, with respect to plastic versus elastic deformation mode, the behavior of glasses under pressure is not universal. Further, we conclude that a medium range order elastic glass-to-glass transition from a rigid to a more flexible network is induced by pressure for two of the glasses (x=0.2 0.4). This transition is reversible upon decompression, merely exhibiting a small hysteresis. © 2010 The American Physical Society.	en
heal.journalName	Physical Review B - Condensed Matter and Materials Physics	en
dc.identifier.doi	10.1103/PhysRevB.81.174202	en
dc.identifier.volume	81	en
dc.identifier.issue	17	en