Ionic transport mechanisms in oxide based glasses in the supercooled and glassy states

被引：45

作者：

Souquet, JL ^{[1
]}

Duclot, M ^{[1
]}

Levy, M ^{[1
]}

机构：

[1] Univ Grenoble 1, ENSEEG, Lab Electrochim & Physicochim Mat & Interfaces, CNRS,UMR INPG 5631, F-38402 St Martin Dheres, France

来源：

SOLID STATE IONICS | 1998年 / 105卷 / 1-4期

关键词：

oxide glasses; ion conductivity; vitreous transition temperature;

D O I：

10.1016/S0167-2738(97)00470-0

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：

A model for ionic transport in glasses is proposed assuming that, like for ionic crystals, the displacement of cations would result from the migration of interstitial pairs. The formation of these pairs is supposed to be an activated function of the temperature and their migration to be dominated by an activated jump mechanism at low temperature and by a free volume co-operative mechanism above the vitreous temperature. Using numerical fits for conductivity data in the whole temperature range, that change of mechanism enables the determination of the defect formation enthalpy and its migration enthalpy in the low temperature domain.

引用

页码：237 / 242

页数：6

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[2]

CAILLOT E, 1994, PHYS CHEM GLASSES-B, V35, P1

[3]

COHEN MH, 1959, CHEM PHYS, V21, P1164

[4] Analysis of recent measurements of the viscosity of glasses [J].