Publicação: Contribution of an extrinsic mechanism for the electrical polarization in BiMn2O5 ceramics
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American Institute of Physics (AIP)
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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]
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Aip Advances. Melville: Amer Inst Physics, v. 2, n. 4, p. 5, 2012.
