Mixed Ionic-Electronic Conducting Perovskites as Nanostructured Ferroelastics

Published on Jan 1, 2019
· DOI :10.1016/B978-0-12-814807-5.00013-9
Irina V. Belenkaya1
Estimated H-index: 1
(RAS: Russian Academy of Sciences),
Olga Bragina4
Estimated H-index: 4
(RAS: Russian Academy of Sciences),
A. P. Nemudry8
Estimated H-index: 8
(RAS: Russian Academy of Sciences)
Abstract In the present work, we propose to take into account the fact that perovskites with mixed conductivity, as a rule, belong to the ferroics, namely to ferroelastics, which in turn allows us to use models and ideas developed for the related class of ferroics-ferroelectrics. Nanostructuring due to the formation of twins is characteristic for both kinds of materials. This approach allows us to develop a theoretical base for the strategy of doping MIEC perovskites by ferroactive cations, proposed in early; it is actively used at present to achieve purposeful regulation of the functional properties of nanostructured MIEC perovskites, which are promising as electrode materials for SOFCs.
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