Journal of the Magnetics Society of Japan
Online ISSN : 1880-4004
Print ISSN : 0285-0192
ISSN-L : 0285-0192
Magnetic Recording Heads
Dual Spin-Valve with PdPtMn Antiferromagnetic Layers
H. KishiY. ShimizuK. NagasakaA. TanakaM. Oshiki
Author information
JOURNAL OPEN ACCESS

1998 Volume 22 Issue 4_2 Pages 249-252

Details
Abstract
The dual spin-valve (DSV) has an MR ratio 1.5 to 2 times more than that of a conventional spin-valve. We investigated the MR properties of a DSV with PdPtMn antiferromagnetic layers, which showed high corrosion resistance and high thermal stability. The magnetization of the free layer is rotated from the easy axis by the magneto-static fields of the two pinned layers. We examined the dependence of the bias field (Hb) on the DSV structure, reducing the pinned layer thickness to decrease the magneto-static field, reducing the Cu spacer thickness to increase the interlayer coupling, and varying the magnetic field generated from the sense current. We succeeded in decreasing the bias field to half that of a symmetric DSV by introducing a thin pinned layer, a thin Cu spacer and an asymmetric DSV.
Content from these authors
© 1998 by The Magnetics Society of Japan
Previous article Next article
feedback
Top