Invention Grant
- Patent Title: Stabilizing layered structure for magnetic tape heads
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Application No.: US15097174Application Date: 2016-04-12
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Publication No.: US09947344B2Publication Date: 2018-04-17
- Inventor: Robert G. Biskeborn , Robert E. Fontana, Jr. , Calvin S. Lo
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Zilka-Kotab, P.C.
- Main IPC: G11B5/39
- IPC: G11B5/39 ; G11B5/187 ; G11B5/008

Abstract:
An apparatus according to one embodiment includes an array of magnetic read transducers each having a current-perpendicular-to-plane sensor, magnetic shields on opposite sides of the sensor in an intended direction of media travel thereacross, and a stabilizing layered structure between at least one of the magnetic shields and the sensor. The stabilizing layered structure has an antiferromagnetic layer, a first ferromagnetic layer adjacent the antiferromagnetic layer, and a second ferromagnetic layer. The antiferromagnetic layer pins a magnetization direction in the first ferromagnetic layer along an antiferromagnetic polarized direction of the antiferromagnetic layer. An antiparallel coupling layer is positioned between the ferromagnetic layers such that a magnetization direction in the second ferromagnetic layer is opposite the magnetization direction in the first ferromagnetic layer.
Public/Granted literature
- US20170294198A1 STABILIZING LAYERED STRUCTURE FOR MAGNETIC TAPE HEADS Public/Granted day:2017-10-12
Information query
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