Multiferroic nature of charge-ordered rare earth manganites

Claudy Rayan Serrao; A Sundaresan; C N R Rao

doi:10.1088/0953-8984/19/49/496217

Multiferroic nature of charge-ordered rare earth manganites

Materials Science 2009-11-13 v1 Strongly Correlated Electrons

Authors: Claudy Rayan Serrao , A Sundaresan , C N R Rao

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Abstract

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.

Keywords

manganites multiferroic magnetic structure

Cite

@article{arxiv.0708.0746,
  title  = {Multiferroic nature of charge-ordered rare earth manganites},
  author = {Claudy Rayan Serrao and A Sundaresan and C N R Rao},
  journal= {arXiv preprint arXiv:0708.0746},
  year   = {2009}
}

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