Test of the Anderson Stuart model and correlation between free volume and the `universal conductivity in sodium silicate glasses

Detalhes bibliográficos
Autor(a) principal: Nascimento, Marcio Luis Ferreira
Data de Publicação: 2007
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ufba/576
Resumo: Experimental ionic conductivity sigma and activation energy EA data in the binary sodium silicate system are reviewed. Analysis and brief discussion based on 48 glasses in a wide compositional range (between 4 to 45 Na2O mol%) are presented. Emphasis is placed on the application of the Anderson-Stuart model to describe the variation of activation energy EA with sodium concentration. In this analysis were considered experimental parameters such as shear modulus G and relative dielectric permittivity epsilon, also in wide compositional range. A universal finding is obtained using log10 sigma vs. EA/kBT in 47 of the 48 glasses investigated, where EA is the activation energy for conduction, kB is the Boltzmann constant and T is the absolute temperature. Using conductivity and molar volume from density data, both measured at 20oC in the same glasses, it was found a remarkable common cubic scaling relation between conductivity enhancement of the free volume due to increase in alkali content. The drastic drop in conductivity by 16 orders of magnitude for so many ion-conducting binary sodium silicate glasses is then caused by structure and ion content. The effects of shear modulus, relative dielectric permittivity and free volume are taken into account, as also the problem of phase separation. In particular, it is suggested that the glass network expansion, which is related to the available free volume, is a parameter that could partially explain the increase in ionic conductivity for this binary system.
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spelling Nascimento, Marcio Luis FerreiraNascimento, Marcio Luis Ferreira2010-11-10T19:21:55Z2010-11-10T19:21:55Z200700222461http://www.repositorio.ufba.br/ri/handle/ufba/576Journal of Materials Science, v. 42, p. 3841-3850Experimental ionic conductivity sigma and activation energy EA data in the binary sodium silicate system are reviewed. Analysis and brief discussion based on 48 glasses in a wide compositional range (between 4 to 45 Na2O mol%) are presented. Emphasis is placed on the application of the Anderson-Stuart model to describe the variation of activation energy EA with sodium concentration. In this analysis were considered experimental parameters such as shear modulus G and relative dielectric permittivity epsilon, also in wide compositional range. A universal finding is obtained using log10 sigma vs. EA/kBT in 47 of the 48 glasses investigated, where EA is the activation energy for conduction, kB is the Boltzmann constant and T is the absolute temperature. Using conductivity and molar volume from density data, both measured at 20oC in the same glasses, it was found a remarkable common cubic scaling relation between conductivity enhancement of the free volume due to increase in alkali content. The drastic drop in conductivity by 16 orders of magnitude for so many ion-conducting binary sodium silicate glasses is then caused by structure and ion content. The effects of shear modulus, relative dielectric permittivity and free volume are taken into account, as also the problem of phase separation. In particular, it is suggested that the glass network expansion, which is related to the available free volume, is a parameter that could partially explain the increase in ionic conductivity for this binary system.Submitted by Marcio Luis Ferreira Nascimento (mlfn@ufba.br) on 2010-11-10T19:21:55Z No. of bitstreams: 1 ArtigoASfree-Na2O-JMS42-Nascimento.pdf: 464813 bytes, checksum: a5ccd38ba490f5171a2d20c2fb498257 (MD5)Made available in DSpace on 2010-11-10T19:21:55Z (GMT). No. of bitstreams: 1 ArtigoASfree-Na2O-JMS42-Nascimento.pdf: 464813 bytes, checksum: a5ccd38ba490f5171a2d20c2fb498257 (MD5) Previous issue date: 2007-01-01Estados UnidosVidroCondutividadeAnderson-StuartModeloTest of the Anderson Stuart model and correlation between free volume and the `universal conductivity in sodium silicate glassesArtigo de Periódicoinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionengreponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAinfo:eu-repo/semantics/openAccessORIGINALArtigoASfree-Na2O-JMS42-Nascimento.pdfArtigoASfree-Na2O-JMS42-Nascimento.pdfapplication/pdf464813https://repositorio.ufba.br/bitstream/ufba/576/1/ArtigoASfree-Na2O-JMS42-Nascimento.pdfa5ccd38ba490f5171a2d20c2fb498257MD51LICENSElicense.txtlicense.txttext/plain1908https://repositorio.ufba.br/bitstream/ufba/576/2/license.txta2a031e97b0b4996633eff63108f8705MD52TEXTArtigoASfree-Na2O-JMS42-Nascimento.pdf.txtArtigoASfree-Na2O-JMS42-Nascimento.pdf.txtExtracted texttext/plain37597https://repositorio.ufba.br/bitstream/ufba/576/3/ArtigoASfree-Na2O-JMS42-Nascimento.pdf.txtded1a98f5a1ca05e7afe6fd5336c5fe5MD53ufba/5762022-10-24 19:42:59.464oai:repositorio.ufba.br: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ório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-10-24T22:42:59Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.en.fl_str_mv Test of the Anderson Stuart model and correlation between free volume and the `universal conductivity in sodium silicate glasses
title Test of the Anderson Stuart model and correlation between free volume and the `universal conductivity in sodium silicate glasses
spellingShingle Test of the Anderson Stuart model and correlation between free volume and the `universal conductivity in sodium silicate glasses
Nascimento, Marcio Luis Ferreira
Vidro
Condutividade
Anderson-Stuart
Modelo
title_short Test of the Anderson Stuart model and correlation between free volume and the `universal conductivity in sodium silicate glasses
title_full Test of the Anderson Stuart model and correlation between free volume and the `universal conductivity in sodium silicate glasses
title_fullStr Test of the Anderson Stuart model and correlation between free volume and the `universal conductivity in sodium silicate glasses
title_full_unstemmed Test of the Anderson Stuart model and correlation between free volume and the `universal conductivity in sodium silicate glasses
title_sort Test of the Anderson Stuart model and correlation between free volume and the `universal conductivity in sodium silicate glasses
author Nascimento, Marcio Luis Ferreira
author_facet Nascimento, Marcio Luis Ferreira
author_role author
dc.contributor.author.fl_str_mv Nascimento, Marcio Luis Ferreira
Nascimento, Marcio Luis Ferreira
dc.subject.eng.fl_str_mv Vidro
Condutividade
Anderson-Stuart
Modelo
topic Vidro
Condutividade
Anderson-Stuart
Modelo
description Experimental ionic conductivity sigma and activation energy EA data in the binary sodium silicate system are reviewed. Analysis and brief discussion based on 48 glasses in a wide compositional range (between 4 to 45 Na2O mol%) are presented. Emphasis is placed on the application of the Anderson-Stuart model to describe the variation of activation energy EA with sodium concentration. In this analysis were considered experimental parameters such as shear modulus G and relative dielectric permittivity epsilon, also in wide compositional range. A universal finding is obtained using log10 sigma vs. EA/kBT in 47 of the 48 glasses investigated, where EA is the activation energy for conduction, kB is the Boltzmann constant and T is the absolute temperature. Using conductivity and molar volume from density data, both measured at 20oC in the same glasses, it was found a remarkable common cubic scaling relation between conductivity enhancement of the free volume due to increase in alkali content. The drastic drop in conductivity by 16 orders of magnitude for so many ion-conducting binary sodium silicate glasses is then caused by structure and ion content. The effects of shear modulus, relative dielectric permittivity and free volume are taken into account, as also the problem of phase separation. In particular, it is suggested that the glass network expansion, which is related to the available free volume, is a parameter that could partially explain the increase in ionic conductivity for this binary system.
publishDate 2007
dc.date.issued.fl_str_mv 2007
dc.date.accessioned.fl_str_mv 2010-11-10T19:21:55Z
dc.date.available.fl_str_mv 2010-11-10T19:21:55Z
dc.type.driver.fl_str_mv Artigo de Periódico
info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ufba/576
dc.identifier.issn.none.fl_str_mv 00222461
dc.identifier.number.en.fl_str_mv Journal of Materials Science, v. 42, p. 3841-3850
identifier_str_mv 00222461
Journal of Materials Science, v. 42, p. 3841-3850
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dc.language.iso.fl_str_mv eng
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