Neutron diffraction study of magnetic ordering associated with ferroelectricity in TmMn2O5

Satoru Kobayashi, Hiroyuki Kimura, Yukio Noda, Kay Kohn

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36 Citations (Scopus)


We have studied magnetic orderings of a ferroelectric TmMn 2O5 by single-crystal neutron diffraction and dielectric measurements. Below TN1 = 44 K, TmMn2O5 shows the sequence of magnetic phase transitions at T = 36.4, 35.1 and 24.9 K, associated with changes in the magnetic propagation vector q = (qx, 0, qz). Such magnetic phase transitions are quite similar to those of YMn2O5 with non-magnetic Y ion reported previously. In addition, we observed another magnetic phase transition at T = 4.8 K which implies a dramatic reorientation of Mn moments induced by the rare-earth Tm moment. The agreement between the temperatures of the magnetic and ferroelectric phase transitions indicates that the ferroelectric ordering is strongly correlated with the magnetic ordering.

Original languageEnglish
Pages (from-to)468-472
Number of pages5
Journaljournal of the physical society of japan
Issue number1
Publication statusPublished - 2005 Jan


  • Dielectric constant
  • Ferroelectricity
  • Magnetic ordering
  • Multiferroic
  • Neutron diffraction
  • TmMnO

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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