Role of ZnO in Dc Electrical Conductivity of Lithium Bismuthate Glasses
Author(s) -
Shashidhar Bale,
Syed Rahman
Publication year - 2013
Publication title -
isrn materials science
Language(s) - English
Resource type - Journals
eISSN - 2090-6099
pISSN - 2090-6080
DOI - 10.1155/2013/126805
Subject(s) - activation energy , isothermal process , arrhenius equation , lithium (medication) , materials science , electrical resistivity and conductivity , chalcogenide , analytical chemistry (journal) , conductivity , arrhenius plot , mineralogy , thermodynamics , chemistry , metallurgy , electrical engineering , physics , medicine , engineering , chromatography , endocrinology
Glasses of various compositions belonging to the Bi2O3-B2O3-ZnO-Li2O quaternary system were prepared using melt quench technique. Dc electric measurements were done on the samples, and activation energies are determined. Arrhenius plots showed straight line behaviour. It is observed that the conductivity of the samples increased with temperature and also with Li2O content, whereas the activation energy decreased with Li2O content. The isothermal plots for constant ZnO and constant Bi2O3 glasses revealed that the conduction in these glasses is due to lithium ions only. The isothermal plots for constant lithium containing glasses varied nonlinearly with two maxima, which is attributed to mixed former effect. The variation is explained based on Anderson-Stuart model.
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