Please use this identifier to cite or link to this item: https://repositorio.ufba.br/handle/ufba/573
Full metadata record
DC FieldValueLanguage
dc.contributor.authorLongstaffe, James-
dc.contributor.authorWerner-Zwanziger, Ulrike-
dc.contributor.authorSchneider, Jose Fabian-
dc.contributor.authorNascimento, Marcio Luis Ferreira-
dc.contributor.authorZanotto, Edgar Dutra-
dc.contributor.authorZwanziger, Joseph-
dc.creatorLongstaffe, James-
dc.creatorWerner-Zwanziger, Ulrike-
dc.creatorSchneider, Jose Fabian-
dc.creatorNascimento, Marcio Luis Ferreira-
dc.creatorZanotto, Edgar Dutra-
dc.creatorZwanziger, Joseph-
dc.date.accessioned2010-11-10T19:08:49Z-
dc.date.available2010-11-10T19:08:49Z-
dc.date.issued2008-02-01-
dc.identifier.issn19327447-
dc.identifier.urihttp://www.repositorio.ufba.br/ri/handle/ufba/573-
dc.description.abstractThere are two general mechanisms of devitrification in glass: heterogeneous nucleation of crystals from surfaces and impurities, and homogeneous nucleation from the volume. It is thought that structural similarities between glass and crystal at the intermediate-range level influence the mechanism followed, however there are few scarse experimental studies to test this hypothesis. In this paper solid-state nuclear magnetic resonance spectroscopy is used to probe intermediate-range order in sodium and lithium disilicate glasses through measurement of the second moment of the distribution of dipolar couplings. These two glasses undergo heterogeneous and homogeneous nucleation respectively. The second moments measured for the lithium glass closely follow the trend established by the layered structures of the isochemical crystalline phases while the same measurements for the sodium glass do not. This observation supports the hypothesis that glasses capable of homogeneous nucleation are structurally more similar to the resulting crystalline phases than those glasses that exhibit only heterogeneous nucleationen
dc.description.provenanceSubmitted by Márcio Nascimento (mlfn@ufba.br) on 2010-11-10T19:08:49Z No. of bitstreams: 1 IntermediateRangeOrderAlkaliDisilicate-JPC112-Nascimento.pdf: 235931 bytes, checksum: 870303c7e2fc2430fcdcea858d6ab8f0 (MD5)en
dc.description.provenanceMade available in DSpace on 2010-11-10T19:08:49Z (GMT). No. of bitstreams: 1 IntermediateRangeOrderAlkaliDisilicate-JPC112-Nascimento.pdf: 235931 bytes, checksum: 870303c7e2fc2430fcdcea858d6ab8f0 (MD5) Previous issue date: 2008-02-01en
dc.language.isoen_USen
dc.subjectVidroen
dc.subjectNMRen
dc.subjectCristalizaçãoen
dc.subjectCrescimento de Cristaisen
dc.subjectViscosidadeen
dc.subjectNucleaçãoen
dc.titleIntermediate-range order of alkali disilicate glasses and its relation to the devitrification mechanismen
dc.typeArtigo de Periódicopt_BR
dc.typeArtigo de Periódicoen
dc.description.localpubEstados Unidosen
dc.identifier.numberJournal of Physical Chemistry. C, Nanomaterials and Inferfaces, v. 112, p. 6151-6159en
Appears in Collections:Artigos Publicados em Periódicos (PEI)

Files in This Item:
File Description SizeFormat 
IntermediateRangeOrderAlkaliDisilicate-JPC112-Nascimento.pdf230,4 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.