Premium
Investigation of the conduction processes in PZT‐based multiferroics: Analysis from Jonscher's formalism
Author(s) -
Guerra J. D. S.,
Portugal R. J.,
Silva A. C.,
Guo R.,
Bhalla A. S.
Publication year - 2014
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201350336
Subject(s) - multiferroics , materials science , ceramic , ferroelectricity , superexchange , formalism (music) , composite material , thermal conduction , condensed matter physics , ferromagnetism , physics , dielectric , art , musical , visual arts , optoelectronics
The conductive processes in multiferroic ceramic composites based on PbZr 0.65 Ti 0.35 O 3 (PZT) and BaFe 12 O 19 (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– x BaM 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.