TY - JOUR
T1 - Joule Heating Effect on Field-Free Magnetization Switching by Spin-Orbit Torque in Exchange-Biased Systems
AU - Razavi, Seyed Armin
AU - Wu, Di
AU - Yu, Guoqiang
AU - Lau, Yong Chang
AU - Wong, Kin L.
AU - Zhu, Weihua
AU - He, Congli
AU - Zhang, Zongzhi
AU - Coey, J. M.D.
AU - Stamenov, Plamen
AU - Khalili Amiri, Pedram
AU - Wang, Kang L.
N1 - Funding Information:
This work is supported in part by C-SPIN and FAME, two of six centers of STARnet, a Semiconductor Research Corporation program sponsored by MARCO and DARPA. This work is also supported by the National Science Foundation (Grant No.ECCS 1611570) and Nanosystems Engineering Research Center for Translational Applications of Nanoscale Multiferroic Systems Cooperative Agreement Grant No.EEC-1160504. We like to acknowledge the collaboration of this research with the King Abdul-Aziz City for Science and Technology via The Center of Excellence for Green Nanotechnologies. This work is supported as part of the SHINES Center, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award No.S000686. D.W. and Z.Z.Z. thank for the support of the China Scholarship Council, the 973 Program (Grant No.2014CB921104), and the National Natural Science Foundation of China Grant No.11474067. Y.-C.L., P.S., and J.M.D.C. acknowledge the support by Science Foundation Ireland through AMBER and by Grant No. 13/ERC/I2561. In addition, G.Q.Y. acknowledges Junyang Chen for fruitful discussions.
PY - 2017/2/23
Y1 - 2017/2/23
N2 - Switching of magnetization via spin-orbit torque provides an efficient alternative for nonvolatile memory and logic devices. However, to achieve deterministic switching of perpendicular magnetization, an external magnetic field collinear with the current is usually required, which makes these devices inappropriate for practical applications. In this work, we examine the current-induced magnetization switching in a perpendicularly magnetized exchange-biased Pt/CoFe/IrMn system. A magnetic field annealing technique is used to introduce in-plane exchange biases, which are quantitatively characterized. Under proper conditions, field-free current-driven switching is achieved. We study the Joule heating effect, and we show how it can decrease the in-plane exchange bias and degrade the field-free switching. Furthermore, we discuss that the exchange-bias training effect can have similar effects.
AB - Switching of magnetization via spin-orbit torque provides an efficient alternative for nonvolatile memory and logic devices. However, to achieve deterministic switching of perpendicular magnetization, an external magnetic field collinear with the current is usually required, which makes these devices inappropriate for practical applications. In this work, we examine the current-induced magnetization switching in a perpendicularly magnetized exchange-biased Pt/CoFe/IrMn system. A magnetic field annealing technique is used to introduce in-plane exchange biases, which are quantitatively characterized. Under proper conditions, field-free current-driven switching is achieved. We study the Joule heating effect, and we show how it can decrease the in-plane exchange bias and degrade the field-free switching. Furthermore, we discuss that the exchange-bias training effect can have similar effects.
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U2 - 10.1103/PhysRevApplied.7.024023
DO - 10.1103/PhysRevApplied.7.024023
M3 - Article
AN - SCOPUS:85014752109
VL - 7
JO - Physical Review Applied
JF - Physical Review Applied
SN - 2331-7019
IS - 2
M1 - 024023
ER -