Browse Prior Art Database

Magnetic Stabilization for the GMR Head

IP.com Disclosure Number: IPCOM000014978D
Original Publication Date: 2001-Aug-01
Included in the Prior Art Database: 2003-Jun-20
Document File: 1 page(s) / 37K

Publishing Venue

IBM

Abstract

Disclosed is a new structure which achieves addition of boundary exchange and in-stack magnetostatic bias for the free layer of the GMR head. The passive region of the free layer is pinned using antiparallel pinned layers while the in-stack bias layer is simple pinned.

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Magnetic Stabilization for the GMR Head

   Disclosed is a new structure which achieves addition of boundary exchange and in-stack magnetostatic bias for the free layer of the GMR head. The passive region of the free layer is pinned using antiparallel pinned layers while the in-stack bias layer is simple pinned.

The layers are as follows: In the passive region:

     Seed/PtMn/CoFe/Ru/CoFe/Cu/CoFe(1)/Ru/CoFe(2)/PtMn/Ta/Lead/ In the active region:

       Seed/PtMn/CoFe/Ru/CoFe/Cu/CoFe/NiFe/Ta/CoFe/PtMn/ The addition of these two stabilization layers allows thinner ferromagnetic layers in the in-stack structure which can be strongly pinned.

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