Non-Volatile Ferroelectric Switching of Ferromagnetic Resonance in NiFe/PLZT Multiferroic Thin Film Heterostructures

Abstract

Magnetoelectric effect, arising from the interfacial coupling between magnetic and electrical order parameters, has recently emerged as a robust means to electrically manipulate the magnetic properties in multiferroic heterostructures. Challenge remains as finding an energy efficient way to modify the distinct magnetic states in a reliable, reversible, and non-volatile manner. Here we report ferroelectric switching of ferromagnetic resonance in multiferroic bilayers consisting of ultrathin ferromagnetic NiFe and ferroelectric Pb0.92La0.08Zr0.52Ti0.48O3 (PLZT) films, where the magnetic anisotropy of NiFe can be electrically modified by low voltages. Ferromagnetic resonance measurements confirm that the interfacial charge-mediated magnetoelectric effect is dominant in NiFe/PLZT heterostructures. Non-volatile modification of ferromagnetic resonance field is demonstrated by applying voltage pulses. The ferroelectric switching of magnetic anisotropy exhibits extensive applications in energy-efficient electronic devices such as magnetoelectric random access memories, magnetic field sensors, and tunable radio frequency (RF)/microwave devices.

DOI: 10.1038/srep32408

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@inproceedings{Hu2016NonVolatileFS, title={Non-Volatile Ferroelectric Switching of Ferromagnetic Resonance in NiFe/PLZT Multiferroic Thin Film Heterostructures}, author={Zhongqiang Hu and Xinjun Wang and Tianxiang Nan and Ziyao Zhou and Beihai Ma and Xiaoqing Chen and John G Jones and Brandon M. Howe and G. J. Brown and Yuan Gao and Hwaider Lin and Zhiguang Wang and Rongdi Guo and Shuiyuan Chen and Xiaoling Shi and Wei Lin Shi and Hong-zhi Sun and David Budil and Ming Liu and Nian Xiang Sun}, booktitle={Scientific reports}, year={2016} }