Ramazanoglu, M.
, Laver, M.
, Ratcliff, W.
, Watson, S.
, Chen, W.
, Jackson, A.
, Kothapalli, K.
, Lee, S.
, Cheong, S.
and Kiryukhin, V.
(2011),
Local Weak Ferromagnetism in Single-Crystalline Ferroelectric BiFeO<sub>3</sub>, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=909244
(Accessed April 25, 2024)
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Local Weak Ferromagnetism in Single-Crystalline Ferroelectric BiFeO3
Published
Author(s)
M. Ramazanoglu, M. Laver, , , , , , Seongsu Lee, S.- W. Cheong, V. Kiryukhin
Abstract
Polarized small-angle neutron scattering studies of single-crystalline multiferroic BefeO3 reveal a long-wavelength spin density wave generated by 1° spin canting of the spins out of the rotation plane of the antiferromagnetic cycloidal order. This signifies weak ferromagnetism within mesoscopic regions of dimension 0.03 microns along [110}, to several microns along [111], confirming a long-standing theoretical prediction. The average local magnetization is 0.06 υΒ/Fe. Our results provide an indication of the intrinsic macroscopic magnetization to be expected in ferroelectric BFO thin films under strain, where the magnetic cycloid is suppressed.Citation
Physical Review Letters
Volume
107
Issue
20
Pub Type
Journals
Download Paper
Keywords
multiferroic, magnetism, ferroelectricity
Citation
Created October 31, 2011, Updated October 12, 2021