Phys. Rev. Lett. 96, 207204 (2006) [4 pages]
Magnetic Reversal of the Ferroelectric Polarization in a Multiferroic Spinel Oxide
Abstract
References (26)
Citing Articles
Y. Yamasaki, 1 S. Miyasaka, 1 Y. Kaneko, 2 J.-P. He, 2 T. Arima, 2,3 and Y. Tokura1,2,41Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan
2Spin Superstructure Project, ERATO, Japan Science and Technology Agency, Tsukuba 305-8562, Japan
3Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
4Correlated Electron Research Center (CERC), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8562, Japan
Received 13 March 2006; published 26 May 2006; corrected 15 June 2006
Ferroelectric transition has been detected in a ferrimagnetic spinel oxide of CoCr2O4 upon the transition to the conical spin order below 25 K. The direction [ 10] of the spontaneous polarization is normal to both the magnetization easy axis [001] and to the propagation axis [110] of the transverse spiral component, in accord with the prediction based on the spin-current model. The reversal of the spontaneous magnetization by a small magnetic field (~0.1 T) induces the reversal of the spontaneous polarization, indicating the clamping of the ferromagnetic and ferroelectric domain walls.
©2006 The American Physical Society
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