Electric-field control of nonvolatile magnetization in Co 40Fe 40B 20/Pb(Mg 1/3Nb 2/3) 0.7Ti 0.3O 3 structure at room temperature
Zhang, S., Y.G. Zhao, P.S. Li, J.J. Yang, S. Rizwan, J.X. Zhang, J. Seidel, T.L. Qu, Y.J. Yang, Z.L. Luo, Q. He, T. Zou, Q.P. Chen, J.W. Wang, L.F. Yang, Y. Sun, Y.Z. Wu, X. Xiao, X.F. Jin, J. Huang, C. Gao, X.F. Han, Ramamoorthy Ramesh
We report a large and nonvolatile bipolar-electric-field-controlled magnetization at room temperature in a Co 40Fe 40B 20/Pb(Mg 1/3Nb 2/3) 0.7Ti 0.3O 3 structure, which exhibits an electric-field- controlled looplike magnetization. Investigations on the ferroelectric domains and crystal structures with in situ electric fields reveal that the effect is related to the combined action of 109°ferroelastic domain switching and the absence of magnetocrystalline anisotropy in Co 40Fe 40B 20. This work provides a route to realize large and nonvolatile magnetoelectric coupling at room temperature and is significant for applications. © 2012 American Physical Society.
Physical Review Letters
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