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Magnetic field-dependent dielectric constant in La2/3Ca1/3MnO3

J. Rivas·J. Mira·B. Rivas-Murias·A. Fondado·J. Dec·W. Kleemann·M. A. Senaris Rodriguez
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Abstract

We report a rather high dependence of the dielectric permittivity on the magnetic field in La2/3Ca1/3MnO3. The variation is maximum at around 270 K, little above the Curie temperature, TC, and it reaches a 30% under only 0.5 T. We attribute this phenomenon to the space-charge or interfacial polarization produced between the insulator and the metallic regions segregated intrinsically in the material above TC.

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J. Rivas, J. Mira, B. Rivas-Murias, A. Fondado, J. Dec, W. Kleemann, M. A. Senaris Rodriguez. 2006-03-24. Magnetic field-dependent dielectric constant in La2/3Ca1/3MnO3. https://doi.org/10.1063/1.2213513

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