Magnetic-field-induced ferroelectric state in DyFeO3

Y. Tokunaga, S. Iguchi, T. Arima, Y. Tokura

Research output: Contribution to journalArticlepeer-review

306 Citations (Scopus)

Abstract

Versatile and gigantic magnetoelectric (ME) phenomena have been found for a single crystal of DyFeO3. Below the antiferromagnetic ordering temperature of Dy moments, a linear-ME tensor component as large as αzz∼2.4×10- 2esu is observed. It is also revealed that application of magnetic field along the c axis induces a multiferroic (weakly ferromagnetic and ferroelectric) phase with magnetization [ 0.5μB/formula unit (f.u.)] and electric polarization ( 0.2μC/cm2) both along the c axis. Exchange striction working between adjacent Fe3+ and Dy3+ layers with the respective layered antiferromagnetic components is proposed as the origin of the ferroelectric polarization in the multiferroic phase.

Original languageEnglish
Article number097205
JournalPhysical Review Letters
Volume101
Issue number9
DOIs
Publication statusPublished - 2008 Aug 29
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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