Data Reader with Magnetic Seed Lamination
AssigneeSeagate Technology LLC
InventorsZhengqi Lu, Ann Lynch, Daniel Hassett, Jiansheng Xu, Jae-Young Yi, Liwen Tan, Eric W. Singleton
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Abstract
A magnetic element capable of reading data may generally be configured at least with a magnetic seed lamination disposed between a data reader stack and a magnetic shield. The magnetic seed lamination may be constructed at least with one magnetic layer coupled to the bottom shield and at least one non-magnetic layer decoupling the data reader stack from the at least one magnetic layer.
Claims20
An apparatus comprising a magnetic seed lamination disposed between a data reader stack and a magnetic shield, the magnetic seed lamination comprising a first non-magnetic layer disposed between first and second magnetic layers and a second non-magnetic layer disposed between the reader stack and the second magnetic layer, The first magnetic layer contacting the magnetic shield and having a first uniaxial anisotropy that differs from a second uniaxial anisotropy of the second magnetic layer.
An apparatus comprising a magnetic seed lamination disposed between a data reader stack and a magnetic shield, the magnetic seed lamination comprising a first non-magnetic layer disposed between first and second magnetic layers and a second non-magnetic layer disposed between the reader stack and the second magnetic layer, The first magnetic layer contacting the magnetic shield and having a first uniaxial anisotropy and first magnetic moment that respectively differ from a second uniaxial anisotropy and second magnetic moment of the second magnetic layer.
A magnetic element comprising a magnetic seed lamination disposed between a data reader stack and a magnetic shield, the magnetic seed lamination comprising a first non-magnetic layer disposed between first and second magnetic layers and a second non-magnetic layer disposed between the reader stack and the second magnetic layer, The first magnetic layer contacting the magnetic shield and having a first uniaxial anisotropy that differs from a second uniaxial anisotropy of the second magnetic layer, the second non-magnetic layer contributing to a shield-to-shield spacing of the reader stack, the first magnetic, second magnetic, and first non-magnetic layers each being omitted from the shield-to-shield spacing.
Dependencies are inferred from the claim text.