Ferroelectricity induced by incommensurate-commensurate magnetic phase transition in multiferroic HoMn2O5

Hiroyuki Kimura; Youichi Kamada; Yukio Noda; Koji Kaneko; Naoto Metoki; Key Kohn

doi:10.1143/JPSJ.75.113701

Ferroelectricity induced by incommensurate-commensurate magnetic phase transition in multiferroic HoMn₂O₅

Hiroyuki Kimura, Youichi Kamada, Yukio Noda, Koji Kaneko, Naoto Metoki, Key Kohn

Division of Measurements

Research output: Contribution to journal › Article

39 Citations (Scopus)

Abstract

Neutron diffraction measurements under high magnetic fields in multiferroic HoMn₂O₅ have revealed a clear relationship between microscopic magnetism and field-induced ferroelectricity. The applied magnetic field induces a first-order phase transition from an incommensurate magnetic order to a commensurate magnetic order, where a spontaneous electric polarization occurs. The one-to-one correspondence between the magnetic phase diagram and the dielectric phase diagram under magnetic field clearly indicates that the electric polarization is magnetically induced and the commensurate magnetic structure is indispensable to the ferroelectricity in the multiferroic RMn₂O₅ system.

Original language	English
Article number	113701
Journal	journal of the physical society of japan
Volume	75
Issue number	11
DOIs	https://doi.org/10.1143/JPSJ.75.113701
Publication status	Published - 2006 Nov 1

Keywords

Colossal magnetoelectric effect
Ferroelectricity
Incommensurate-commensurate magnetic phase transition
Multiferroics
Neutron diffraction

ASJC Scopus subject areas

Physics and Astronomy(all)

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Kimura, H., Kamada, Y., Noda, Y., Kaneko, K., Metoki, N., & Kohn, K. (2006). Ferroelectricity induced by incommensurate-commensurate magnetic phase transition in multiferroic HoMn₂O₅. journal of the physical society of japan, 75(11), [113701]. https://doi.org/10.1143/JPSJ.75.113701

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abstract = "Neutron diffraction measurements under high magnetic fields in multiferroic HoMn2O5 have revealed a clear relationship between microscopic magnetism and field-induced ferroelectricity. The applied magnetic field induces a first-order phase transition from an incommensurate magnetic order to a commensurate magnetic order, where a spontaneous electric polarization occurs. The one-to-one correspondence between the magnetic phase diagram and the dielectric phase diagram under magnetic field clearly indicates that the electric polarization is magnetically induced and the commensurate magnetic structure is indispensable to the ferroelectricity in the multiferroic RMn2O5 system.",

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AU - Kimura, Hiroyuki

AU - Kamada, Youichi

AU - Noda, Yukio

AU - Kaneko, Koji

AU - Metoki, Naoto

AU - Kohn, Key

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N2 - Neutron diffraction measurements under high magnetic fields in multiferroic HoMn2O5 have revealed a clear relationship between microscopic magnetism and field-induced ferroelectricity. The applied magnetic field induces a first-order phase transition from an incommensurate magnetic order to a commensurate magnetic order, where a spontaneous electric polarization occurs. The one-to-one correspondence between the magnetic phase diagram and the dielectric phase diagram under magnetic field clearly indicates that the electric polarization is magnetically induced and the commensurate magnetic structure is indispensable to the ferroelectricity in the multiferroic RMn2O5 system.

AB - Neutron diffraction measurements under high magnetic fields in multiferroic HoMn2O5 have revealed a clear relationship between microscopic magnetism and field-induced ferroelectricity. The applied magnetic field induces a first-order phase transition from an incommensurate magnetic order to a commensurate magnetic order, where a spontaneous electric polarization occurs. The one-to-one correspondence between the magnetic phase diagram and the dielectric phase diagram under magnetic field clearly indicates that the electric polarization is magnetically induced and the commensurate magnetic structure is indispensable to the ferroelectricity in the multiferroic RMn2O5 system.

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KW - Ferroelectricity

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