Invention Grant
- Patent Title: Magnetic sensing device including a sense enhancing layer
- Patent Title (中): 磁感测装置包括感应增强层
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Application No.: US11305778Application Date: 2005-12-16
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Publication No.: US07800868B2Publication Date: 2010-09-21
- Inventor: Zheng Gao , Brian W. Karr , Song Xue , Eric L. Granstrom , Khuong T. Tran , Yi X. Li
- Applicant: Zheng Gao , Brian W. Karr , Song Xue , Eric L. Granstrom , Khuong T. Tran , Yi X. Li
- Applicant Address: US CA Scotts Valley
- Assignee: Seagate Technology LLC
- Current Assignee: Seagate Technology LLC
- Current Assignee Address: US CA Scotts Valley
- Agency: Kinney & Lange, P.A.
- Main IPC: G11B5/33
- IPC: G11B5/33 ; G11B5/127
Abstract:
A magnetic sensor includes a sensor stack having a first magnetic portion, a second magnetic portion, and a barrier layer between the first magnetic portion and the second magnetic portion. At least one of the first magnetic portion and the second magnetic portion includes a multilayer structure having a first magnetic layer having a positive magnetostriction adjacent to the barrier layer, a second magnetic layer, and an intermediate layer between the first magnetic layer and the second magnetic layer. The magnetic sensor has an MR ratio of at least about 80% when the magnetic sensor has a resistance-area (RA) product of about 1.0 Ω·μm2.
Public/Granted literature
- US20070139827A1 Magnetic sensing device including a sense enhancing layer Public/Granted day:2007-06-21
Information query
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