A differential dual spin valve with high pinning stability

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

doi:10.1063/1.3441412

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 journal › Article › peer-review

10 Scopus citations

Abstract

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 language	English (US)
Article number	212506
Journal	Applied Physics Letters
Volume	96
Issue number	21
DOIs	https://doi.org/10.1063/1.3441412
State	Published - May 24 2010
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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abstract = "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.",

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AU - Han, G. C.

AU - Qiu, J. J.

AU - Wang, C. C.

AU - Ko, V.

AU - Guo, Z. B.

PY - 2010/5/24

Y1 - 2010/5/24

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AB - 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.

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A differential dual spin valve with high pinning stability

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