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Charge-order driven multiferroic and magneto-dielectric properties of rare earth manganates

Serrao, Claudy Rayan and Sahu, Jyoti Ranjan and Ghosh, Anirban (2010) Charge-order driven multiferroic and magneto-dielectric properties of rare earth manganates. In: Bulletin of Materials Science, 33 (2). pp. 169-178.

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Abstract

Charge-order driven magnetic ferroelectricity is shown to occur in several rare earth manganates of the general formula, Ln(1-x)A(x)MnO(3) (In = rare earth, A = alkaline earth). Charge-ordered manganates exhibit dielectric constant anomalies around the charge-ordering or the antiferromagnetic transition temperature. Magnetic fields have a marked effect on the dielectric properties of these compounds, indicating the presence of coupling between the magnetic and electrical order parameters. Magneto-dielectric properties are retained in small particles of the manganates. The observation of magneto-ferroelectricity in these manganates is in accordance with theoretical predictions.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Indian Academy of Sciences.
Keywords: Multiferroics; magnetoelectric effect; magnetocapacitance; rare earth manganates
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 13 Jul 2010 05:50
Last Modified: 19 Sep 2010 06:11
URI: http://eprints.iisc.ernet.in/id/eprint/29272

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