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Raman scattering study of alpha-quartz and Si(1-x)GexO2 solid solutions

hal.structure.identifierInstitut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier [ICGM ICMMM]
dc.contributor.authorRANIERI, Vincent
hal.structure.identifierInstitut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier [ICGM ICMMM]
dc.contributor.authorBOURGOGNE, David
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDARRACQ, Stéphane
hal.structure.identifierInstitut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier [ICGM ICMMM]
dc.contributor.authorCAMBON, Martine
hal.structure.identifierInstitut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier [ICGM ICMMM]
dc.contributor.authorHAINES, Julien
hal.structure.identifierInstitut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier [ICGM ICMMM]
dc.contributor.authorCAMBON, Olivier
hal.structure.identifierLaboratoire des colloïdes, verres et nanomatériaux [LCVN]
dc.contributor.authorLE PARC, Rozenn
hal.structure.identifierLaboratoire des colloïdes, verres et nanomatériaux [LCVN]
dc.contributor.authorLEVELUT, Claire
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorLARGETEAU, Alain
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDEMAZEAU, Gérard
dc.date.created2009-03-27
dc.date.issued2009
dc.identifier.issn1098-0121
dc.description.abstractEnalpha-quartz-type Si1−xGexO2 solid solutions (x=0.06, 0.11, and 0.24) and pure SiO2 were investigated by Raman spectroscopy. Coupled and decoupled vibrational modes were identified at room temperature as a function of composition. Tetrahedral tilting librational modes involved in the displacive alpha<-->beta-quartz phase transition are decoupled. The wave number of the coupled A1 mode located at 464 cm−1 for pure alpha-quartz was found to vary quite linearly with germanium content. Raman spectra were recorded up to 1473 K. Substitution of germanium in the quartz lattice clearly improves the thermal stability of the alpha phase. The alpha<-->beta-quartz phase transition temperature increases from 846±1 K for x=0 to about 1300±50 K for x=0.24. At the same time, the dynamic disorder observed in quartz well below the transition is reduced in the solid solutions.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.subject.engermanium
dc.subject.enlibrational states
dc.subject.enquartz
dc.subject.enRaman spectra
dc.subject.ensolid-state phase transformations
dc.subject.enthermal stability
dc.subject.envibrational modes
dc.title.enRaman scattering study of alpha-quartz and Si(1-x)GexO2 solid solutions
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevB.79.224304
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]
bordeaux.journalPhysical Review B: Condensed Matter and Materials Physics (1998-2015)
bordeaux.page224304
bordeaux.volume79
bordeaux.issue22
bordeaux.peerReviewedoui
hal.identifierhal-00434422
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00434422v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Physical%20Review%20B:%20Condensed%20Matter%20and%20Materials%20Physics%20(1998-2015)&amp;rft.date=2009&amp;rft.volume=79&amp;rft.issue=22&amp;rft.spage=224304&amp;rft.epage=224304&amp;rft.eissn=1098-0121&amp;rft.issn=1098-0121&amp;rft.au=RANIERI,%20Vincent&amp;BOURGOGNE,%20David&amp;DARRACQ,%20St%C3%A9phane&amp;CAMBON,%20Martine&amp;HAINES,%20Julien&amp;rft.genre=article


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