Ag concentration dependent transport properties of LiF-MoO3-P2O5 glasses

被引：17

作者：

Nagarjuna, M. ^{[1
]}

Satyanarayana, T. ^{[1
]}

Kumar, V. Ravi ^{[1
]}

Veeraiah, N. ^{[1
]}

机构：

[1] Acharya Nagarjuna Univ, Dept Phys, Nuzvid 521201, AP, India

来源：

PHYSICA B-CONDENSED MATTER | 2009年 / 404卷 / 20期

关键词：

LiF-MoO3-P2O5; glasses; Ag+ ions; DC Conductivity; Dielectric properties; ELECTRICAL-PROPERTIES; PHYSICAL-PROPERTIES; AC CONDUCTION; MOLYBDENUM; SYSTEM; EPR; IR; VALENCE; RAMAN; CRYSTALLINE;

D O I：

10.1016/j.physb.2009.06.123

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

LiF-MoO3-P2O5 glasses mixed with different concentrations of Ag2O (ranging from 0 to 1.0 mol%) was prepared. D.C. conductivity and dielectric properties over a range of temperature have been investigated. The analysis of the results of d.c. conductivity has indicated that T>theta(D)/2, the small polaron hoping model seems to be fit and the conduction is adiabatic in nature. These results further indicated that there is a change over of conduction mechanism from electronic to ionic at about 0.4 mol% of Ag2O. The low temperature part of a.c. conductivity is explained based on quantum mechanical tunneling model. The quantitative analysis of these results is further extended with the aid of the data on optical absorption, ESR and IR spectral studies. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：3748 / 3755

页数：8

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