Internal magnetic field effect on magnetoelectricity in orthorhombic $RMnO_3$ crystals

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dc.creatorNoda, K.
dc.creatorAkaki, M.
dc.creatorNakamura, F.
dc.creatorAkahoshi, D.
dc.creatorKuwahara, H.
dc.date2006-10-16
dc.date.accessioned2026-07-07T07:55:25Z
dc.date.available2026-07-07T07:55:25Z
dc.descriptionWe have investigated the role of the 4$f$ moment on the magnetoelectric (ME) effect of orthorhombic $R$MnO$_{3}$ ($R$=rare earth ions). In order to clarify the role of the 4$f$ moment, we prepared three samples: (Eu,Y)MnO$_{3}$ without the 4$f$ moment, TbMnO$_{3}$ with the anisotropic 4$f$ moment, and (Gd,Y)MnO$_{3}$ with the isotropic 4$f$ moment. The ferroelectric behaviors of these samples are different from each other in a zero magnetic field. (Eu,Y)MnO$_{3}$ and (Gd,Y)MnO$_{3}$ show the ferroelectric polarization along the a axis in the ground state, while TbMnO$_{3}$ shows it along the c axis. Such difference may arise from the influence of the anisotropic Tb$^{3+}$ 4$f$ moment. The direction of the ferroelectric polarization of $R$MnO$_{3}$ is determined by the internal magnetic field arising from the 4$f$ moment.
dc.description2 pages, 1 figure, the proceeding of International Conference of Magnetism, to be published in the Journal of Magnetism and Magnetic Materials
dc.identifierhttps://arxiv.org/abs/cond-mat/0610421
dc.identifierhttp://arxiv.org/abs/cond-mat/0610421
dc.identifierJournal of Magnetism and Magnetic Materials, Volume 310, Issue 2, Part 2, March 2007, Pages 1162-1164
dc.identifierdoi:10.1016/j.jmmm.2006.10.337
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/126962
dc.subjectStrongly Correlated Electrons
dc.titleInternal magnetic field effect on magnetoelectricity in orthorhombic $RMnO_3$ crystals
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