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Method for providing an improved AFM reader shield

  • US 9,431,047 B1
  • Filed: 06/25/2013
  • Issued: 08/30/2016
  • Est. Priority Date: 05/01/2013
  • Status: Active Grant
First Claim
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1. A method for providing a magnetic read transducer having an air-bearing surface (ABS) comprising:

  • providing a first shield;

    providing a read sensor, the read sensor having at least one pinned layer aligned with a sensor pinning direction; and

    providing a second shield, the read sensor residing between the first shield and the second shield, the at least one pinned layer being closer to the first shield than to the second shield, the step of providing the second shield further includingdepositing a first ferromagnetic layer, a second ferromagnetic layer and a pinning layer, at least one of the first ferromagnetic layer, the second ferromagnetic layer and the pinning layer being deposited in the presence of a first magnetic field in a first direction non-orthogonal and non-parallel to the sensor pinning direction, a nonmagnetic spacer layer residing between the first ferromagnetic layer and the second ferromagnetic layer, the pinning layer being adjacent to the second ferromagnetic layer, the first ferromagnetic layer residing between the read sensor and the nonmagnetic spacer layer, the first ferromagnetic layer being coupled antiparallel with the second ferromagnetic layer.

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