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

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dc.contributor.author Stavrou, E en
dc.contributor.author Raptis, C en
dc.contributor.author Syassen, K en
dc.date.accessioned 2014-03-01T02:00:24Z
dc.date.available 2014-03-01T02:00:24Z
dc.date.issued 2010 en
dc.identifier.issn 1098-0121 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/29092
dc.subject.classification Physics, Condensed Matter en
dc.subject.other RAMAN-SCATTERING en
dc.subject.other VITREOUS SILICA en
dc.subject.other DYNAMICS en
dc.subject.other TEMPERATURE en
dc.subject.other DEPENDENCE en
dc.subject.other SIO2 en
dc.subject.other AS2S3 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.secondary 174202 en
heal.language English 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. en
heal.publisher AMER PHYSICAL SOC en
heal.journalName PHYSICAL REVIEW B en
dc.identifier.isi ISI:000278141600049 en
dc.identifier.volume 81 en
dc.identifier.issue 17 en


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