TY - JOUR KW - Chemical analysis KW - Nanostructured materials KW - Atomic force microscopy KW - Ferroelectric materials KW - Epitaxial growth KW - Bismuth compounds KW - Magnetization KW - Piezoelectricity KW - Electric field effects KW - Piezoelectric force microscopy (PEM) KW - Elastic coupling KW - Magnetic force microscopy (MFM) KW - Magnetization switching KW - Switching circuits AU - F Zavaliche AU - H Zheng AU - L Mohaddes-Ardabili AU - S.Y Yang AU - Q Zhan AU - P Shafer AU - E Reilly AU - R Chopdekar AU - Y Jia AU - P Wright AU - D.G Schlom AU - Y Suzuki AU - Ramamoorthy Ramesh AB - We present direct evidence for room-temperature magnetization reversal induced by an electric field in epitaxial ferroelectric BiFeO 3-ferrimagnetic CoFe 2O 4 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. © 2005 American Chemical Society. BT - Nano Letters DO - 10.1021/nl051406i LA - eng M1 - 9 N1 - cited By 352 N2 - We present direct evidence for room-temperature magnetization reversal induced by an electric field in epitaxial ferroelectric BiFeO 3-ferrimagnetic CoFe 2O 4 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. © 2005 American Chemical Society. PY - 2005 SP - 1793 EP - 1796 T2 - Nano Letters TI - Electric field-induced magnetization switching in epitaxial columnar nanostructures VL - 5 SN - 15306984 ER -