关键词: 电场驱动磁反转/
多铁性材料/
纳米磁体/
磁电随机存储器
English Abstract
Electric field driven magnetic switching in nanoscale multiferroic heterostructures
Song Xiao1,Gao Xing-Sen1,
Liu Jun-Ming2
1.Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou 510006, China;
2.National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
Fund Project:Project supported by the Key Research and Development Program of China (Grant No. 2016YFA0201002), the National Basic Research Program of China (Grant No. 2015CB921202), the National Natural Science Foundation of China (Grant Nos. 11674108, 51272078), the Project for Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme, China (2014), the Science and Technology Planning Project of Guangdong Province, China (Grant No. 2015B090927006), and the Natural Science Foundation of Guangdong Province, China (Grant No. 2016A030308019).Received Date:24 June 2018
Accepted Date:10 July 2018
Published Online:05 August 2018
Abstract:Recently, there has been a surge of research interest in the electric field control of magnetism due to its promising application in spintronic and memory devices, which has become a hot topic in the field of multiferroic research. In current spintronic technology, magnetic reversal is usually driven by a large electric current via current generated magnetic field or spin-torque effect to write/erase a magnetic bit, and thus producing large power consumption and heat dissipation. While using insulating multiferroic materials, the reversal of magnetization can be triggered by applying an electric field instead of current, hence dramatically reducing the energy consumption and heat dissipation. With the current miniature trend in microelectronic technology, it is very essential to explore the electric field driven magnetic reversal (EFMS) behaviours in a micro/nanometer scale. In this article we briefly review the new progress in the field of EFMS based on multiferroic heterostructures, including some new features arising from size reduction, as well as some recent experimental and theoretical advances towards nanoscale EFMS, e.g. strain-mediated coupling, or spin exchange coupling in BiFeO3-based heterostructures, and their associated mechanisms. Finally, some key challenges in developing future EFMS based magnetoelectric devices, and some prospects for future research are also discussed.
Keywords: electric driven magnetic switching/
multiferroics/
nanomagnets/
magnnetoelectric random access memory
