DIFFUSION LIMITED PERCOLATION - A MODEL FOR TRANSPORT IN IONIC GLASSES

被引：26

作者：

BUNDE, A ^{[1
]}

MAASS, P ^{[1
]}

INGRAM, MD ^{[1
]}

机构：

[1] UNIV ABERDEEN,DEPT CHEM,OLD ABERDEEN AB9 2UU,SCOTLAND

来源：

BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1991年 / 95卷 / 09期

关键词：

COMPUTER EXPERIMENTS; DIFFUSION; ELECTRICAL PROPERTIES; GLASSES; TRANSPORT PROPERTIES;

D O I：

10.1002/bbpc.19910950905

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：

We present a novel model for ionic transport in glasses which we call diffusion limited percolation. The model focuses on the fact that each mobile ion prefers and maintains its own distinct characteristic environment in the glassy network. This leads to mismatch effects and to the existence of a memory effect which strongly influences the process of ion migration. We show that by our simple model a variety of so far imperfectly understood phenomena can be explained, among them the drastic increase of the dc conductivity of oxide glasses with the modifier content and the mixed alkali effect.

引用

页码：977 / 983

页数：7

共 18 条

[1]

Anderson O. L., 1954, J AM CERAM SOC, V37, P573, DOI [DOI 10.1111/J.1151-2916.1954.TB13991.X, 10.1111/j.1151-2916.1954.tb13991.x]

[2]

BUNDE A, 1991, IN PRESS J NONCRYST

[3]

BUNDE A, PREPRINT

[4] MIXED ALKALI GLASSES - THEIR PROPERTIES AND USES [J].