Ionic Conductor Composites: Theory and Materials

Journal of Electroceramics 5:2, 111 125, 2000#2000 Kluwer Academic Publishers. Manufactured in The Conductor Composites: Theory and MaterialsP. KNAUTHL aboratoire de Physico-Chimie des Mate riaux, Universite de Provence, Centre de St Charles, Case 26, F-13331 Marseille Cedex 3, FranceSubmitted October 14, 1999; Revised November 18, 1999; Accepted November 18, main theoretical concepts on Ionic conduction at interfaces, especially the space charge layermodel, are summarized in the rst part of this review: ion trapping or redistribution leads to charge carrieraccumulation, depletion or inversion and, consequently, to conductivity changes in composite con rmations of the space charge layer model and the complementary percolation model arediscussed.

boundaries into account [2,10,11]. Assuming an ionic solid M⁄Xÿwith Frenkel disorder, the bulk defect equilibrium: MM ⁄Vi?M i ⁄V 0 M –2ƒ is established between metal interstitials M ? i and metal vacancies VM 0.The Frenkel equilibrium

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  Material, Theory, Composite, Solid, Conductor, Equilibrium, Ionic, Ionic conductor composites, Theory and materials

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