Spin transport sensor
AssigneeSeagate Technology LLC
InventorsEric Walter Singleton, Zhiguo Ge
Life of this patent
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Abstract
The implementations disclosed herein provide for a spin transport sensor including a synthetic antiferromagnet (SAF) adjacent a shield element. The SAF extends to an air-bearing surface (ABS) and provides a current path from a current source to an ABS-region of a spin conductor layer. Spin current diffuses from the spin conductor layer to an adjacent free layer, which generates a measurable electrical voltage in a free layer of the spin transport sensor. The SAF serves as both a magnetic shield and a spin injector to the spin conductor layer.
Claims20
A magnetoresistive (MR) sensor comprising:
- a synthetic antiferromagnet (SAF) that provides a current path for a spin-polarized current through an air-bearing surface (ABS)-region of a spin conductor layer.
A method comprising:
- forming a synthetic antiferromagnet (SAF) structure in an MR sensor that provides a current path for a spin-polarized current through an air-bearing surface (ABS)-region of a spin conductor layer.
A hard drive disk assembly comprising:
- a magnetic media;
- and
- an MR sensor providing a current path for a spin-polarized current through an air-bearing surface (ABS)-region of a spin conductor layer.
Dependencies are inferred from the claim text.