Oxygen-vacancy effect on structural, magnetic, and ferroelectric properties in multiferroic YMnO <inf>3</inf> single crystals

Publisher:
American Institute of Physics
Publication Type:
Conference Proceeding
Citation:
Journal of Applied Physics: Proceedings of the 56th Annual Conference on Magnetism and Magnetic Materials, 2012, 111 (7)
Issue Date:
2012-04-01
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We have investigated the structural, magnetic, and ferroelectric properties of magnetically frustrated multiferroic YMnO 3 single crystals. The ferroelectric domain structures of YMnO 3 samples were studied by piezoresponse force microscopy. Instead of domain vortex structure in stoichiometric crystals, YMnO 3-δ exhibits a random domain configuration with straight domain walls. In magnetic measurements, the YMnO 3-δ crystal shows typical antiferromagnetic behavior with higher Nel temperature and lower magnetization compared to the stoichiometric sample. The ordered oxygen vacancies dominate multiferroicity through tailoring the domain wall structure. © 2012 American Institute of Physics.
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