Correlation between conductivity and free volume in rubidium and cesium silicate glasses

Autor:	Marcio Nascimento
Jazyk:	angličtina
Rok vydání:	2007
Předmět:	Physics Drop (liquid) Analytical chemistry General Physics and Astronomy chemistry.chemical_element Anderson-Stuart model Conductivity Alkali metal Rubidium Alkali silicate Molar volume chemistry Ionic conduction Caesium Ionic conductivity Free volume Glass Scaling
Zdroj:	Brazilian Journal of Physics v.37 n.2a 2007 Brazilian Journal of Physics Sociedade Brasileira de Física (SBF) instacron:SBF Brazilian Journal of Physics, Volume: 37, Issue: 2a, Pages: 429-434, Published: JUN 2007 Scopus-Elsevier
Popis:	It is shown that conductivity and molar volume in binary rubidium and cesium silicate glasses, both measured at room temperature, obey a common cubic scaling relation due to increase in alkali content. The drastic drop in conductivity up to 15 orders of magnitude for so many ion-conducting binary alkali silicate glasses (in wide composition range) is mainly caused by the structure and the ion content. In particular, it is suggested that the glass network expansion, which is related to the available free volume, is a parameter that could explain the increase in ionic conductivity for these binary systems.
Databáze:	OpenAIRE
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