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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Ionized oxygen vacancy-related electrical conductivity in (Pb1-xLax) (Zr0.90Ti0.10)(1-x/4)O-3 ceramics

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Author(s):
Pelaiz-Barranco, A. [1, 2] ; Guerra, J. D. S. [2] ; Lopez-Noda, R. [3] ; Araujo, E. B. [2]
Total Authors: 4
Affiliation:
[1] Univ La Habana, Fac Fis, Inst Ciencia & Tecnol Mat, Havana 10400 - Cuba
[2] Univ Estadual Paulista UNESP, Dept Quim & Fis, BR-15385000 Ilha Solteira, SP - Brazil
[3] ICIMAF, Inst Cibernet Matemat & Fis, Dept Fis Aplicada, Havana 10400 - Cuba
Total Affiliations: 3
Document type: Journal article
Source: JOURNAL OF PHYSICS D-APPLIED PHYSICS; v. 41, n. 21 NOV 7 2008.
Web of Science Citations: 53
Abstract

The electrical conductivity behaviour in the paraelectric state has been investigated in lanthanum modified lead zirconate titanate (PLZT) ceramics, considering the universal relaxation law. The contribution of conductive processes to the dielectric response for the low-frequency range was discussed taking into account the oxygen vacancies mechanism. The activation energies for the thermally hopping and conductivity processes were obtained. The results for the frequency dependence of the conductivity suggest at the oxygen vacancy hopping processes, due to relaxations in oxygen vacancy-related dipoles, being mainly responsible for the conduction behaviour in the studied system. (AU)