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Title: Effect of interlayer coupling on the reversal process of differential dual spin valves
Authors: Sekhar, Murapaka Chandra
Wang, Chang Chun
Lew, Wen Siang
Han, G. C.
Issue Date: 2012
Source: Sekhar, M. C., Wang, C. C., Han, G. C., & Lew, W. S. (2012). Effect of interlayer coupling on the reversal process of differential dual spin valves. Journal of applied physics, 111(7).
Series/Report no.: Journal of Applied Physics
Abstract: Differential dual spin valve (DDSV) is a potential read sensor for ultrahigh density magnetic recording. Recently, it has been found that self-biased DDSVs in which the two free layers (FLs) align in flux closure configuration could potentially remove permanent hard bias. In the present work, we have carried out a systematic study of the effect of the interlayer coupling through gap layer on the reversal process of a self-biased DDSV. From the uniform field response of the DDSV, it was found that the competition among magnetostatic coupling, interlayer coupling and the shape anisotropy of the FLs gives rise to distinctive reversal behaviors, and the magnetostatic coupling could not be perfectly compensated by the interlayer exchange coupling. The down track response of the DDSV reveals that interlayer coupling could play a dominant role on the performance of the DDSV.
ISSN: 0021-8979
DOI: 10.1063/1.3679764
Rights: © 2012 American Institute of Physics. This paper was published in Journal of Applied Physics and is made available as an electronic reprint (preprint) with permission of American Institute of Physics. The paper can be found at the following official DOI: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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