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Origin of Electric Field Induced Magnetization in Multiferroic HoMnO3

Published

Author(s)

Benjamin Ueland, Jeffrey W. Lynn, Mark Laver, Y. J. Choi, S.-W. Cheong

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 {approximately equal} 40 K. 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 {approximately equal} 50 K, indicating that the electric field affects the magnetization via the antiferromagnetic domain walls rather than through a change to the bulk magnetic order.
Citation
Physical Review Letters
Volume
104
Issue
14

Keywords

Multiferroic, Magnetoelectric coupling, Antiferromagnetic domains, Ferroelectric domains

Citation

, B. , Lynn, J. , Laver, M. , , Y. and Cheong, S. (2010), Origin of Electric Field Induced Magnetization in Multiferroic HoMnO<sub>3</sub>, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=903631 (Accessed February 20, 2024)
Created April 7, 2010, Updated February 19, 2017