Electric Field-Induced Magnetization Switching in Epitaxial Columnar Nanostructures
Nano Letters2005Vol. 5(9), pp. 1793–1796
Citations Over TimeTop 1% of 2005 papers
F. Zavaliche, Haimei Zheng, L. Mohaddes-Ardabili, So‐Young Yang, Qingfeng Zhan, Padraic Shafer, Elizabeth Reilly, Rajesh V. Chopdekar, Yan Jia, Philip Wright, Darrell G. Schlom, Y. Suzuki, R. Ramesh
Abstract
We present direct evidence for room-temperature magnetization reversal induced by an electric field in epitaxial ferroelectric BiFeO3-ferrimagnetic CoFe2O4 columnar nanostructures. Piezoelectric force microscopy and magnetic force microscopy were used to locally image the coupled piezoelectric-magnetic switching. Quantitative analyses give a perpendicular magnetoelectric susceptibility of approximately 1.0 x 10(-2) G cm/V. The observed effect is due to the strong elastic coupling between the two ferric constituents as the result of the three-dimensional heteroepitaxy.
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