AC conductivity and its scaling behavior in lithium and sodium bismuthate glasses

被引：69
|
作者：
Murugaraj, R
Govindaraj, G
George, D
机构：
[1] Pondicherry Univ, Raman Sch Phys, Pondicherry 605014, India
[2] Rajiv Gandhi Coll Engn & Technol, Dept Phys, Pondicherry 607402, India
来源：
MATERIALS LETTERS | 2003年 / 57卷 / 11期
关键词：
Ac conductivity; electrical properties; bismuthate glasses; universal power law; scaling behavior;
D O I：
10.1016/S0167-577X(02)01047-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ac conductivity measurements and its scaling analysis is studied on the new sodium and lithium bismuthate systems xNa(2)O+ (1-x)Bi2O3 and xLi(2)O+(1-x)Bi2O3 for various compositions in the frequency range from 20 Hz to 1 MHz and in the temperature range from 467 to 750 K. The measured electrical relaxation data of these glasses are analysed using Jonscher's universal power law (UPL) and random free energy barrier model (RFEBM). All experimentally known features of the ac conductivity, including its scaling behavior, are explained satisfactorily based on the power law and random free energy barrier model. (C) 2002 Elsevier Science B.V. All rights reserved.
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收藏
页码：1656 / 1661
页数：6
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