Origin of electric-field-induced magnetization in multiferroic HoMnO3

B. G. Ueland, J. W. Lynn, M. Laver, Y. J. Choi, S. W. Cheong

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

We have performed polarized and unpolarized small angle neutron scattering experiments on single crystals of HoMnO3 and have found that an increase in magnetic scattering at low momentum transfers begins upon cooling through temperatures close to the spin reorientation transition at TSR 40K. We attribute the increase to an uncompensated magnetization arising within antiferromagnetic domain walls. Polarized neutron scattering experiments performed while applying an electric field show that the field suppresses magnetic scattering below T 50K, indicating that the electric field affects the magnetization via the antiferromagnetic domain walls rather than through a change to the bulk magnetic order.

Original languageEnglish
Article number147204
JournalPhysical Review Letters
Volume104
Issue number14
DOIs
Publication statusPublished - 2010 Apr 7

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this