Magnetic-field-induced switching between ferroelectric phases in orthorhombic-distortion-controlled $R$MnO${}_3$

Abstract

We have investigated the dielectric and magnetic properties of Eu${}_{0.595}$Y${}_{0.405}$MnO${}_3$ $without$ the presence of the 4$f$ magnetic moments of the rare earth ions, and have found two ferroelectric phases with polarization along the $a$ and $c$ axes in a zero magnetic field. A magnetic field induced switching from one to the other ferroelectric phase took plase in which the direction of ferroelectric polarization changed from the a axis to the c axis by the application of magnetic fields parallel to the a axis. In contrast to the case of TbMnO${}_3$, in which the 4$f$ moments of Tb${}^{3+}$ ions play an important role in such a ferroelectric phase switching, the magnetic-field-induced switching between ferroelectric phases in Eu${}_{0.595}$Y${}_{0.405}$MnO${}_3$ does not originate from the magnetic transition of the rare-earth 4$f$ moments, but from that of the Mn 3$d$ spins.

8 pages, 3 figures, RevTeX4, Proceedings of MMM 2005, to appear in J. Appl. Phys

References in corpus (1)

• Neutron diffraction study of TbMnO3: Magnetic structure revisited

Cited by in corpus (11)

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• Microscopic Model and Phase Diagrams of the Multiferroic Perovskite Manganites
• Multiferroic properties and magnetic structure of Sm1-xYxMnO3
• Dynamical magnetoelectric effects in multiferroic oxides
• Landau model for the phase diagrams of the orthorhombic rare-earth manganites RMnO3
• Spin-wave dispersion and magnon chirality in multiferroic TbMnO3
• Internal magnetic field effect on magnetoelectricity in orthorhombic $RMn{O}_3$ crystals
• ESR evidence for partial melting of the orbital order in LaMnO${}_3$ below the Jahn-Teller transition
• Polar properties of Eu0.6Y0.4MnO3 ceramics and their magnetic field dependence
• The Effect of $f$-$d$ Magnetic Coupling in Multiferroic $R$MnO${}_3$ Crystals
• Anomalous Coexistence of Ferroelectric Phases ($P\parallel a$ and $P\parallel c$) in Orthorhombic Eu${}_{1-y}$Y${}_y$MnO${}_3$ ($y>0.5$) Crystals