期刊
PHYSICAL REVIEW LETTERS
卷 99, 期 22, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.99.227206
关键词
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For the memory application of magnetoelectric multiferroics, not only bistability (i.e., ferroelectricity) but also the switching of the polarization direction with some noneverlasting stimulus is necessary. Here, we report a novel method for the electric polarization reversal in TbMnO3 without the application of an electric field or heat. The direction of the magnetic-field-induced polarization along the a axis (P-a) is memorized even in the zero field where P-a is absent. The polarization direction can be reversed by rotating the magnetic-field direction in the ab plane.
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