TITLE

Ionic transport in polycrystalline zirconia and Frenkel’s space-charge layer postulation

AUTHOR(S)
M’Peko, Jean-Claude; de Souza, Milton Ferreira
PUB. DATE
July 2003
SOURCE
Applied Physics Letters;7/28/2003, Vol. 83 Issue 4, p737
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Various physical and chemical techniques have been applied elsewhere to get insight into the peculiarities of conduction processes in zirconia-based ionic conductors. Although Frenkel's space-charge model is popularly accepted to describe well the capability of grain boundaries for limiting ion transport throughout these materials, validating this model has generally resulted to be a difficult task provided substantial restrictions to access the subgrain nanometer-sized regions involved. The present work reports a simple but consistent method to also approach this important question, and consists of studying the bulk and grain-boundary electrical responses of these materials while they are subjected to external mechanical loads.
ACCESSION #
10331070

 

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