MIXED MOBILE ION EFFECT - A NUMERICAL STUDY ON THE BASIS OF A MODIFIED 2-SPIN FACILITATED KINETIC ISING-MODEL

Authors
SCHULZ B SCHULZ M TRIMPER S
Citation
B. Schulz et al., MIXED MOBILE ION EFFECT - A NUMERICAL STUDY ON THE BASIS OF A MODIFIED 2-SPIN FACILITATED KINETIC ISING-MODEL, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 58(3), 1998, pp. 3368-3371
Citations number
20
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
58
Issue
3
Year of publication
1998
Part
B
Pages
3368 - 3371
Database
ISI
SICI code
1063-651X(1998)58:3<3368:MMIE-A>2.0.ZU;2-P
Abstract
A numerical simulation on the basis of a modified two-spin facilitated kinetic Ising model for the longstanding problem of the mixed mobile ion effect (or mixed alkali effect) in glasses is presented. The essen tial idea is an internal dynamical interaction between the cation moti on and the dynamics of the cooperative regions of the glass. This inte raction leads to a strong variation of the de conductivity versus the composition ratio f of the cations contained in the glass. Both the de pendence on temperature and the dependence on the composition ratio ca n be obtained in good agreement with experimental measurements.