Invention Grant
US08451567B2 High resolution magnetic read head using top exchange biasing and/or lateral hand biasing of the free layer
有权
高分辨率磁读头使用自由层的顶部交换偏置和/或侧向手偏置
- Patent Title: High resolution magnetic read head using top exchange biasing and/or lateral hand biasing of the free layer
- Patent Title (中): 高分辨率磁读头使用自由层的顶部交换偏置和/或侧向手偏置
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Application No.: US12928473Application Date: 2010-12-13
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Publication No.: US08451567B2Publication Date: 2013-05-28
- Inventor: Yuchen Zhou , Wenyu Chen , Joe Smyth
- Applicant: Yuchen Zhou , Wenyu Chen , Joe Smyth
- Applicant Address: US CA Milpitas
- Assignee: Headway Technologies, Inc.
- Current Assignee: Headway Technologies, Inc.
- Current Assignee Address: US CA Milpitas
- Agency: Saile Ackerman LLC
- Agent Stephen B. Ackerman
- Main IPC: G11B5/39
- IPC: G11B5/39

Abstract:
A CPP (Current Perpendicular to Plane) MR (Magnetoresistive) read head and its method of fabrication includes a patterned CPP MR sensor stack having a SAF (Synthetic Antiferromagnetic) free layer structure that is longitudinally biased by the combination of an exchange biasing layer formed over the sensor stack and hard biasing layers that are formed adjacent to the patterned sides of the stack. The combination provides the stack with high resolution reading capabilities without the necessity for a narrow read gap formed by closely spaced top and bottom shields. Sixteen embodiments are described that provide different versions of the exchange biasing layer, different positions of the hard biasing layers and different patternings of the CPP MR sensor stack.
Public/Granted literature
- US20120147504A1 High resolution magnetic read head Public/Granted day:2012-06-14
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