Studies on dielectric dispersion, relaxation kinetics and a.c. conductivity of Na₂OCuOSiO₂ glasses mixed with Bi₂O₃-Influence of redox behavior of copper ions

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• 作者：J. Ashok^a ; ^b ; N. Purnachand^c ; J. Suresh Kumar^d ; M. Srinivasa Reddy^b ; ^{msreddy81@rediffmail.com} ; B. Suresh^a ; ^b ; M.P.F. Gra&ccedil ; a^d ; N. Veeraiah^a ; ^{nvr8@rediffmail.com}
• 关键词：Na2OCuOSiO2 glasses ; Bi3+ ions ; Dielectric dispersion ; a.c. conductivity
• 刊名：Journal of Alloys and Compounds
• 出版年：2017
• 出版时间：5 March 2017
• 年：2017
• 卷：696
• 期：Complete
• 页码：1260-1268
• 全文大小：3306 K
• 卷排序：696

文摘

Na2OCuOSiO2 glasses mixed with different concentrations Bi2O3 were synthesized. Various dielectric parameters were measured in broad frequency and temperature regions. The dielectric loss, electric moduli exhibited relaxation effects. σac is decreased by 3 orders of magnitude with increase of Bi2O3 from 4 to 20 mol%. Results indicated increase of insulating character of the glass with Bi2O3 content.