Electric-Field-Control of Non-Volatile Magnetization Switching in Multiferroic CoFeB/(011)-PMN-PT Heterostructures

Abstract:

The giant converse magnetoelectric coupling (GME) was observed in the multiferroic Co₄₀Fe₄₀B₂₀/(011)-0.7Pb (Mg_1/3Nb_2/3)O₃-0.3PbTiO₃ heterostructures at room temperature in this investigation. A tunability of magnetization by electric field along the [100] direction was up to-66.7% at-10 Oe bias magnetic fields. Moreover, the non-volatile magnetization switching was found after removal of bipolar electric field. The corresponding remanent magnetic states even without the assistance of bias magnetic fields were stable and could be modulated synchronously by a sequence of pulse electric fields. The 90^o rotation of easy axis and non-symmetrical ferroelastic domain switching contributed to the above results. This work is of great significance in designing ultra-low power and non-volatile magnetoelectric memories and other spintronic devices at room temperature.

• Periodical: Materials Science Forum (Volume 848)
• Pages: 675-681
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.848.675
• Online since: March 2016
• Authors: Yuan Jun Yang, Bin Hong, Meng Meng Yang, Liang Xin Wang, Hao He, Jiang Tao Zhao, Kai Hu, Hao Liang Huang, Xiao Guang Li, Zhen Lin Luo, Chao Yang Kang, Ming Li, Hai Tao Zong, Chen Gao
• Keywords: CoFeB Soft Magnetic Film, Electric-Field-Control of Magnetization, Multiferroic Heterostructure, Non-Volatile Magnetization Switching, PMN-PT Ferroelectric Crystal

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