Activation energy and conductivity of glasses in the P2O5-V2O5-Li2O system

被引：4

作者：

Behzad, H. ^{[1
]}

Hekmatshoar, M. H. ^{[1
]}

Mirzayi, M. ^{[1
]}

Azmoonfar, M. ^{[1
]}

机构：

[1] Sahand Univ Technol, Fac Basic Sci, Tabriz, Iran

来源：

IONICS | 2009年 / 15卷 / 05期

关键词：

Glass; Activation energy; Electronic conductivity; Ionic conductivity; ELECTRICAL-PROPERTIES; VANADIUM; POLARONS; OXIDE;

D O I：

10.1007/s11581-009-0319-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The conductivity of glasses in the 50P(2)O(5) - xV(2)O(5) - (50 - x)Li2O system was studied as a function of temperature and composition. For all compositions, the conductivity variation as a function of temperature followed an Arrhenius type relationship. Isothermal variation of conductivity as a function of composition showed a minimum for a molar ratio x near 20. Probable mechanisms for decrease of conductivity with decrease of vanadium oxide concentration were explained. The minimum in room temperature was attributed to increase of V4+/V5+ with decrease of vanadium oxide in specific concentrations of vanadium oxide. Activation energy increased with decrease of V2O5 content. This behavior was attributed to increase of average spacing between vanadium ions.

引用

页码：647 / 650

页数：4

共 18 条

[1] EPR study of V2O5-P2O5-Li2O glass system [J].