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US 2016/0093319 A1Published application
Magnetoresistive sensor with saf structure having amorphous alloy layer
AssigneeSeagate Technology LLC
InventorsEric W. Singleton, Liwen Tan, Jae-Young Yi
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Abstract
A magnetoresistive (MR) sensor including a synthetic antiferromagnetic (SAF) structure that is magnetically coupled to a side shield element. The SAF structure includes at least one magnetic amorphous layer that is an alloy of a ferromagnetic material and a refractory material. The amorphous magnetic layer may be in contact with a non-magnetic layer and antiferromagnetically coupled to a layer in contact with an opposite surface of the non-magnetic layer.
Claims20
A magnetoresistive (MR) sensor comprising:
- a first synthetic antiferromagnetic (SAF) structure having an amorphous alloy layer that includes a ferromagnetic material and a refractory material;
- a second SAF structure having an amorphous alloy layer that includes a ferromagnetic material and a refractory material;
- and
- a sensor stack between the first SAF structure and the second SAF structure.
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An MR sensor comprising:
- a sensor stack;
- and
- a synthetic antiferromagnetic (SAF) structure including a coupling spacer layer in contact with a first amorphous alloy layer, the first amorphous alloy layer including a ferromagnetic material and a refractory material.
A MR sensor comprising:
- a sensor stack;
- a synthetic antiferromagnetic (SAF) structure comprising:
- a coupling spacer;
- a first amorphous alloy layer that includes a first ferromagnetic material and a first refractory material on a first side of the coupling spacer;
- and
- a second amorphous alloy layer that includes a second ferromagnetic material and a second refractory material on a first side of the coupling spacer
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Dependencies are inferred from the claim text.