A MODEL FOR COUPLED DIFFUSION REACTIONS IN MN-ZN FERRITES - GENERALIZATION OF THE FICKSS FIRST LAW

Authors
PERRIAT P GILLOT B
Citation
P. Perriat et B. Gillot, A MODEL FOR COUPLED DIFFUSION REACTIONS IN MN-ZN FERRITES - GENERALIZATION OF THE FICKSS FIRST LAW, Solid state ionics, 67(1-2), 1993, pp. 35-43
Citations number
7
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical
Journal title
Solid state ionics → ACNP
ISSN journal
01672738
Volume
67
Issue
1-2
Year of publication
1993
Pages
35 - 43
Database
ISI
SICI code
0167-2738(1993)67:1-2<35:AMFCDR>2.0.ZU;2-8
Abstract
To describe the coupled diffusion reactions of the Mn2+ and the Mn3+ i ons oxidation in Mn-Zn ferrites, we have generalized the Fick's first law. Such an equation is available to describe the diffusion of a spec ies in a concentration gradient with additional conditions of minimal and maximal values varying at each point in the material. The diffusio n equations have then been solved by using the finite element method.