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

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

Research output: Contribution to journalArticle

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 languageEnglish
Article number113701
Journaljournal of the physical society of japan
Volume75
Issue number11
DOIs
Publication statusPublished - 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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