Multiferroic nature of charge-ordered rare earth manganites

Details Multiferroic nature of charge-ordered rare earth manganites Multiferroic nature of charge-ordered rare earth manganites

2007-08-06

arxiv.org/abs/0708.0746v1

Physics

Condensed Matter

Materials Science

Scientific paper

10.1088/0953-8984/19/49/496217

Charge-ordered rare earth manganites Nd0.5Ca0.5MnO3, La0.25Nd0.25Ca0.5MnO3, Pr0.7Ca0.3MnO3 and Pr0.6Ca0.4MnO3 are found to exhibit dielectric constant anomalies around the charge-ordering or the magnetic transition temperatures. Magnetic fields have a marked effect on the dielectric properties, indicating the presence of coupling between the magnetic and electrical order parameters. The observation of magnetoferroelectricity in these manganites is in accord with the recent theoretical predictions of Khomskii and coworkers.

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