Pressure-induced commensurate magnetic order in multiferroic HoMn 2O5

Hiroyuki Kimura, Keisuke Nishihata, Yukio Noda, Naofumi Aso, Kazuyuki Matsubayashi, Yoshiya Uwatoko, Tetsuya Fujiwara

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16 Citations (Scopus)

Abstract

The pressure-temperature (p-T) phase diagram for microscopic magnetism in the multiferroic compound HoMn2O5 was established using neutron diffraction measurements under a hydrostatic pressure up to 1.25 GPa. At ambient pressure, incommensurate-commensurate-incommensurate magnetic phase transitions occur successively with decreasing temperature. Upon applying pressure, the incommensurate phase at the lowest temperature almost decreases and the commensurate phase appears. The p-T phase diagram established shows excellent agreement with the recently reported p-T dielectric phase diagram, where ferroelectricity is induced by applying pressure. We also found that the p-T magnetic phase diagram is quite similar to the previously obtained magnetic field-temperature phase diagram.

Original languageEnglish
Article number063704
Journaljournal of the physical society of japan
Volume77
Issue number6
DOIs
Publication statusPublished - 2008 Jun

Keywords

  • Colossal magnetoelectric effect
  • Hydrostatic pressure
  • Incommensurate-commensurate magnetic phase transition
  • Magnetic frustration
  • Multiferroics
  • Neutron diffraction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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