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US 8,896,972 B2Granted
Magnetic read head with a read function feature
AssigneeSeagate Technology LLC
InventorsKaizhong Gao, Xilin Peng, Zhongyan Wang, Yonghua Chen
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AssigneeSeagate Technology LLC
InventorsKaizhong Gao, Xilin Peng, Zhongyan Wang, Yonghua Chen
Estimating the term…
In some examples, a system comprising a data storage member including a magnetic storage medium, the magnetic storage medium having a plurality of magnetic bit domains aligned on at least one data track, where a transition boundary between respective magnetic bit domains defines a transition curvature. The system may further comprise a magnetic read head including a first shield layer, a second shield layer, and a read sensor stack provided proximate to the first and second shield layers, where the magnetic read head senses a magnetic field of each of the plurality of magnetic bit domains according to a read playback sensitivity function. In some examples, the shield layers and read sensor stack may be configured to provide a reader playback sensitivity function that substantially corresponds to the shape of the respective magnetic bit domains.
A system comprising a magnetically responsive head with a sensor stack disposed between and contacting first and second shields, the sensor stack having a stack width along a first direction that is less than a shield width of each shield along the first direction, the sensor stack comprising a cap layer comprising a non-magnetic portion disposed between first and second magnetic portions, the cap layer continuously extending the stack width along the first direction in contact with the second shield, the non-magnetic portion having a sensitivity width along the first direction that is less than the stack width and shield width.
An apparatus comprising a magnetically responsive head with a sensor stack disposed between and contacting first and second shields, the sensor stack having a stack width along a cross-track axis that is less than a shield width of each shield along a cross-track axis, the sensor stack comprising a cap layer comprising a non-magnetic portion disposed between first and second magnetic portions, the cap layer continuously extending the stack width along the cross-track axis in contact with the second shield, the non-magnetic portion having a first sensitivity width along the cross-track axis and each magnetic portion having a second sensitivity width along the cross-track axis, the first and second sensitivity width each being less than the stack and shield widths, the first sensitivity width being greater than the second sensitivity width.
An apparatus comprising:
Dependencies are inferred from the claim text.