Electric Field-Induced Magnetization Switching in Epitaxial Columnar Nanostructures
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- 26 August 2005
- journal article
- research article
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 5 (9), 1793-1796
- https://doi.org/10.1021/nl051406i
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 ∼1.0 × 10-2 G cm/V. The observed effect is due to the strong elastic coupling between the two ferroic constituents as the result of the three-dimensional heteroepitaxy.Keywords
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