Bulk spin torque driven perpendicular magnetization switching in L1 0 FePt

Meng Tang (1) , Ka Shen (2) , Shijie Xu (1) , Huanglin Yang (1) , Shuai Hu (1) , Weiming Lü (3, 4) , Changjian Li (5) , Mengsha Li (5) , Zhe Yuan (2) , Stephen Pennycook (5) , Ke Xia (2) , Aurelien Manchon (6, 7) , Shiming Zhou (1) , Xuepeng Qiu (1)

1 Tongji University
2 BNU - Beijing Normal University
3 Jinan University [Guangzhou]
4 HARBIN INSTITUTE OF TECHNOLOGY
5 NUS - National University of Singapore
6 KAUST - King Abdullah University of Science and Technology [Saudi Arabia]
7 CINaM - Centre Interdisciplinaire de Nanoscience de Marseille

Modern information technology demands advanced storage material and efficient data writing scheme. Inherent with a superior perpendicular magnetocrystalline anisotropy, the FePt in L1 0 phase envisions magnetic storage with ultrahigh capacity. However, reversing FePt magnetic state and therefore the encoded information has been proven to be extremely difficult. Here, we demonstrate that an electric current is capable to exert a large spin torque on a L1 0 FePt magnet, which ultimately leads to reversible magnetization switching through domain nucleation and expansion in an efficient and simple manner.

Domaines: Physique [physics]

Meng Tang, Ka Shen, Shijie Xu, Huanglin Yang, Shuai Hu, et al.. Bulk spin torque driven perpendicular magnetization switching in L1 0 FePt. Advanced Materials, 2020, ⟨10.1002/adma.202002607⟩. ⟨hal-02949340⟩