NDLI: [Co/Ni]<formula formulatype=inline> <tex Notation=TeX>$_{rm N}$</tex></formula>-Based Synthetic Antiferromagnet With Perpendicular Anisotropy and Its Application in Pseudo Spin Valves

Content Provider	IEEE Xplore Digital Library
Author	He He Zongzhi Zhang Bin Ma Qingyuan Jin
Copyright Year	1965
Abstract	The dependence of magnetic properties on layer repetition number and Ru thicknesses have been studied for perpendicularly magnetized synthetic antiferromagnet (SAF) in a structure of [Co/Ni]_N/Ru/[Co/Ni]₃. The optimum SAF with strong antiferromangetic coupling field and large switching field of the net magnetization have been determined and utilized as the reference layer in the pseudo spin valves. Compared with the rapid drop of GMR signal for the normal [Co/Ni]-based pseudo spin valves after annealing at low temperature (T_a) of 150°C, the spin valve with SAF reference layer exhibits much stable thermal stability due to the large switching field difference between the free and reference layers which avoids the simultaneous magnetization rotation. The GMR signal of the SAF spin valve sample is 6.0% at room temperature, it decreases very gradually with the increase of T_a. We attribute the slow GMR reduction observed in the SAF spin valve to the effects of domain formation and perpendicular anisotropy deterioration caused by high temperature anneals.
Sponsorship	IEEE Magnetics Society
Starting Page	1327
Ending Page	1330
Page Count	4
File Size	384513
File Format	PDF
ISSN	00189464
Volume Number	46
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Spin valves Temperature Magnetic switching Magnetization Magnetic properties Antiferromagnetic materials Couplings Rapid thermal annealing Thermal stability Anisotropic magnetoresistance thermal stability GMR effect perpendicular anisotropy synthetic antiferromagnet
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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