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Author Zhang, K. ♦ Kai, T. ♦ Zhao, T. ♦ Fujiwara, H. ♦ Mankey, G. J.
Sponsorship (US)
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Publisher The American Physical Society
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ ANISOTROPY ♦ DISTRIBUTION ♦ HYSTERESIS ♦ MAGNETIZATION ♦ MAGNETORESISTANCE ♦ PHYSICS ♦ ROTATION ♦ SPIN ♦ VALVES
Abstract Both normal and inverse magnetoresistance (MR) response curves were observed for synthetic spin valves with the structure of Si(100)/Ru/Co(t{sub 1})/Ru(0.7nm)/Co(t{sub 2})/Cu(3nm)/Co(t{sub 3})/Ru. Under the assumption of a coherent rotation of the magnetization in the three Co layers, the hysteresis loops, magnetization response, and MR response curves were calculated as a function of the parameters of the system. The parameters include antiferromagnetic coupling of Co(t{sub 1}) and Co(t{sub 2}) through Ru layer, a weak ferromagnetic coupling of Co(t{sub 2}) and Co(t{sub 3}) through Cu spacer, giant magnetoresistance of the Co/Cu/Co and Co/Ru/Co systems, and AMR contribution of each Co layer. The uniaxial anisotropy of each Co layer and a distribution of the coupling strength of Co(t{sub 1})/Ru/Co(t{sub 2}) were also included. To fit the experimental data well, it was necessary to include a biquadratic coupling in the Co(t{sub 1})/Ru/Co(t{sub 2}) trilayer. {copyright} 2001 American Institute of Physics.
ISSN 00218979
Educational Use Research
Learning Resource Type Article
Publisher Date 2001-06-01
Publisher Place United States
Journal Journal of Applied Physics
Volume Number 89
Issue Number 11


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