Multiferroic properties in orthorhombic rmno3 (R=dy, tb, and gd) under high pressures

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Abstract

The hydrostatic pressure eŠect on multiferroic properties of rare-earth manganites RMnO3 (R=Dy, Tb, and Gd) with the Pbnm orthorhombic structure was investigated by using a diamond anvil cell. Under high pressures, all of these manganites were found to exhibit ferroelectricity in which spontaneous polarization (≈100 nC cm-2) develops along the a axis. The application of a magnetic field B along the a axis to the high-pressure ferroelectric phase causes a drastic change in the electric polarization P. Especially in GdMnO3, the B-induced change in P reached DP(B)=1.3 nC cm-2. A possible origin of the observed R-dependent pressure eŠect is discussed.

Original languageEnglish
Pages (from-to)138-143
Number of pages6
JournalReview of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu
Volume29
Issue number2
DOIs
Publication statusPublished - 2019 Jan 1

Keywords

  • Diamond anvil cell
  • Dielectric constant
  • Multiferroics]
  • Phase transition

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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