Deterministic Spin-Orbit Torque Induced Magnetization Reversal In Pt/[Co/Ni]_n/Co/Ta Multilayer Hall Bars

Li, Sihua; Goolaup, Sarjoosing; Kwon, Jaesuk; Luo, Feilong; Gan, Weiliang and Lew, Wen Siang (2017). Deterministic Spin-Orbit Torque Induced Magnetization Reversal In Pt/[Co/Ni]_n/Co/Ta Multilayer Hall Bars. Scientific reports, 7, article no. 972.

DOI: https://doi.org/10.1038/s41598-017-01079-7

Abstract

Spin-orbit torque (SOT) induced by electric current has attracted extensive attention as an efficient method of controlling the magnetization in nanomagnetic structures. SOT-induced magnetization reversal is usually achieved with the aid of an in-plane bias magnetic field. In this paper, we show that by selecting a film stack with weak out-of-plane magnetic anisotropy, field-free SOT-induced switching can be achieved in micron sized multilayers. Using direct current, deterministic bipolar magnetization reversal is obtained in Pt/[Co/Ni]₂/Co/Ta structures. Kerr imaging reveals that the SOT-induced magnetization switching process is completed via the nucleation of reverse domain and propagation of domain wall in the system.

Viewing alternatives

Metrics

Item Actions

Export

You can export this page using these formats Digital Object Identifier - DOI

About

• Item ORO ID
• 59850
• Item Type
• Journal Item
• ISSN
• 2045-2322
• Project Funding Details

• Funded Project Name	Project ID	Funding Body
  Competitive Research Programme (Non-volatile Magnetic Logic and Memory Integrated Circuit Devices)	NRF-CRP9-2011-01	Singapore National Research Foundation, Prime Minister’s Office
  Industry-IHL Partnership Program	NRF2015-IIP001-001	Not Set
  MOE-AcRF Tier 2 Grant	MOE 2013-T2-2-017	Not Set

• Academic Unit or School
• Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
  Faculty of Science, Technology, Engineering and Mathematics (STEM)
• Copyright Holders
• © 2017 The Authors
• Depositing User
• Vikram Goolaup