Which spin valve for next giant magnetoresistance head generation? (invited)

Satoru Araki, Masashi Sano, Shuxiang Li, Yoshihiro Tsuchiya, Olivier Redon, Tetsuro Sasaki, Noriaki Ito, Kohichi Terunuma, Haruyuki Morita, Mikio Matsuzaki

Research output: Contribution to journalConference articlepeer-review

24 Citations (Scopus)


To maintain a challenging 100%/year growth rate of the areal density, new spin valve (SV) structures have recently emerged. This work reviews the transport properties of hybrid free, synthetic, and specular SV at film level and discusses their potential for read head application. High sensitivity can be achieved using hybrid free and synthetic free SV due to their small net magnetic moment, but the longitudinal biasing of synthetic free SV is a critical issue. Good thermal stability was obtained in both synthetic pinned and specular SV due to high effective exchange field or good protection from interdiffusion. Moreover, specular SV also shows large output. With structure having different benefits, the next generation of SV head should be a combination to optimize all properties. Nevertheless, it raises many technological issues, related to the processing of very thin layers, which should be solved to meet the requirements of reproducibility and high yield from mass production.

Original languageEnglish
Pages (from-to)5377-5382
Number of pages6
JournalJournal of Applied Physics
Issue number9 II
Publication statusPublished - 2000 May
Externally publishedYes
Event44th Annual Conference on Magnetism and Magnetic Materials - San Jose, CA, United States
Duration: 1999 Nov 151999 Nov 18

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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