Investigation of the conduction processes in PZT-based multiferroics: Analysis from Jonscher's formalism
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Data
2014-05-01
Autores
Guerra, J. D. S.
Portugal, R. J.
Silva, A. C. [UNESP]
Guo, R.
Bhalla, A. S.
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ISSN da Revista
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Editor
Wiley-Blackwell
Resumo
The conductive processes in multiferroic ceramic composites based on PbZr0.65Ti0.35O3 (PZT) and BaFe12O19 (BaM), synthesized by the conventional solid-state reaction method, have been investigated. The DC and AC electrical conductivities have been analyzed in a wide temperature and frequency range and the influence of the BaM content on the electrical properties of the PZT-xBaM composites has been taken into account. It has been observed that the inclusion of the BaM in the PZT ferroelectric matrix promotes conduction mechanisms with magnetic-order characteristics on the ceramics, which were related to doubly ionized oxygen vacancies, superexchange, and double-exchange-type interactions. The obtained results are discussed in the framework of Jonscher's formalism.
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ceramic materials, conduction mechanisms, electrical properties, ferroelectrics, multiferroics
Como citar
Physica Status Solidi B-basic Solid State Physics. Weinheim: Wiley-v C H Verlag Gmbh, v. 251, n. 5, p. 1020-1027, 2014.