Contribution of an extrinsic mechanism for the electrical polarization in BiMn2O5 ceramics

Fier, I.; Chinaglia, D. L.; Walmsley, L.; Pereira, E. C.; Rabelo, A. C.; Freitas, R. G.

Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/42476

Title:

Contribution of an extrinsic mechanism for the electrical polarization in BiMn2O5 ceramics

Author(s):

Institution:

Universidade Estadual Paulista (UNESP)
Universidade Federal de São Carlos (UFSCar)

ISSN:

2158-3226

Sponsorship:

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Abstract:

DC conductivity, frequency dependent dielectric constant and pyroelectric coefficients, obtained from thermal stimulated depolarization current curves, in BiMn2O5 ceramics in the range of temperatures from 10 K to 320 K are reported. The data could be explained if it is assumed that a dipole defect is formed due to an oxygen vacancy and two manganese ions which have their valence changed to accept an electron. Copyright 2012 Author(s). This article is distributed under a Creative Commons Attribution 3.0 Unported License. [http://dx.doi.org/10.1063/1.4769752]

Issue Date:

1-Dec-2012

Citation:

Aip Advances. Melville: Amer Inst Physics, v. 2, n. 4, p. 5, 2012.

Time Duration:

5

Publisher:

American Institute of Physics (AIP)

Source:

http://dx.doi.org/10.1063/1.4769752

URI:

Access Rights:

Acesso aberto

Type:

outro

Source:

http://repositorio.unesp.br/handle/11449/42476

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