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

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

doi:10.1063/1.4769752

journal article·2012-12-01Open access

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

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

AIP Advances· Volume 2· Issue 4

Publisher page Open full text

Source abstract

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.

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Research context

Ceramics & glasses

OpenAlex topics: Ferroelectric and Piezoelectric Materials · Multiferroics and related materials · Dielectric properties of ceramics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Universidade Estadual Paulista (UNESP) Caixa Postal 178 1 Departamento de Física, Instituto de Geociências e Ciências Exatas, , CEP 13500-970, Rio Claro, São Paulo, Brazil

Universidade Federal de São Carlos 2 Departamento de Química, , C.P. 676, CEP13560-970, São Carlos, SP, Brazil

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