A differential dual spin valve with high pinning stability

G. C. Han, J. J. Qiu, C. C. Wang, V. Ko, Z. B. Guo

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


A differential dual spin valve (DDSV) is very promising for ultrahigh linear density recording. The antiparallel magnetization configuration of two reference layers in a DDSV has been realized by using a double synthetic antiferromagnetic coupling structure (SAF) in one spin valve and a single SAF in the other. A high pinning field has been obtained using a double SAF with a magnetically balanced structure. The observed resistance transitions at low fields can be ascribed to the inconsistent switching of two free layers. By forming a strong ferromagnetic coupling between two free layers, a consistent switching is achieved.

Original languageEnglish (US)
Article number212506
JournalApplied Physics Letters
Issue number21
StatePublished - May 24 2010
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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