Electric-field control of non-volatile magnetization switching in the absence of external-magnetic-field bias has been investigated in multiferroic Co40Fe40B20/0.7Pb(Mg1/3Nb2/3)-0.3PbTiO(3) (CoFeB/PMN-0.3PT) heterostructure at room temperature. The two non-volatile magnetic states are achieved without magnetic-field bias and can be switched in a reversible and reproducible manner by an electric field. These results are attributed to the modulation of the magnetic anisotropy of the CoFeB layer by as-grown magnetic field and electric-field-induced non-volatile strain through unipolar-electric-field cycling. High-resolution X-ray diffraction studies on the (022) peaks under in situ electric field indicate that the non-volatile strain is closely related to the 71 degrees ferroelastic domain switching (r1/r2 to r3/r4) of the PMN-0.3PT substrate. The corresponding ratio of the ferroelastic domain r3/r4 is electrically changed by 14.1% between the two non-volatile magnetic states. Our results provide a promising path to non-magnetically operating magnetic bits by pure electric field at room temperature. Copyright (C) EPLA, 2015

Electric-field control of non-volatile magnetization switching without external-magnetic-field bias in CoFeB/(011)-PMN-0.3PT heterostructures / Yang, Yuanjun; Dong, Yongqi; Yang, Meng Meng; He, Hao; Hong, Bin; Luo, Z. L.; Huang, Haoliang; Wang, Haibo; Wang, Mengjiao; Zhu, Xiaodi; Bao, J.; Liu, X. G.; Zhao, J. Y.; Li, X. G.; Gao, C.. - In: EUROPHYSICS LETTERS. - ISSN 0295-5075. - 109:1(2015). [10.1209/0295-5075/109/17008]

Electric-field control of non-volatile magnetization switching without external-magnetic-field bias in CoFeB/(011)-PMN-0.3PT heterostructures

Wang, Mengjiao;
2015

Abstract

Electric-field control of non-volatile magnetization switching in the absence of external-magnetic-field bias has been investigated in multiferroic Co40Fe40B20/0.7Pb(Mg1/3Nb2/3)-0.3PbTiO(3) (CoFeB/PMN-0.3PT) heterostructure at room temperature. The two non-volatile magnetic states are achieved without magnetic-field bias and can be switched in a reversible and reproducible manner by an electric field. These results are attributed to the modulation of the magnetic anisotropy of the CoFeB layer by as-grown magnetic field and electric-field-induced non-volatile strain through unipolar-electric-field cycling. High-resolution X-ray diffraction studies on the (022) peaks under in situ electric field indicate that the non-volatile strain is closely related to the 71 degrees ferroelastic domain switching (r1/r2 to r3/r4) of the PMN-0.3PT substrate. The corresponding ratio of the ferroelastic domain r3/r4 is electrically changed by 14.1% between the two non-volatile magnetic states. Our results provide a promising path to non-magnetically operating magnetic bits by pure electric field at room temperature. Copyright (C) EPLA, 2015
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2991240