Recording read heads with a multi-layer AFM layer methods and apparatuses
First Claim
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1. A read head, comprising:
- a non-magnetic spacer layer;
an anti-ferromagnetic (AFM) layer directly on top of the spacer layer, the AFM layer consisting of;
a first AFM sub-layer comprising Manganese (Mn); and
a second AFM sub-layer directly on top of the first AFM sub-layer and comprising Mn, wherein the second AFM sub-layer has a higher Mn composition than the first AFM sub-layer; and
a pinned magnetic layer directly on top of the second AFM sub-layer.
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Abstract
Apparatuses and methods of recording read heads with a multi-layer anti-ferromagnetic (AFM) layer are provided. The AFM layer has gradient Manganese (Mn) compositions. A multi-layer AFM layer comprises a plurality of sub-layers having different Mn compositions. An upper sub-layer has a higher Mn composition than an lower sub-layer. Different types of gases may be used to deposit each sub-layer and the flow of each gas may be adjusted.
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Citations
9 Claims
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1. A read head, comprising:
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a non-magnetic spacer layer; an anti-ferromagnetic (AFM) layer directly on top of the spacer layer, the AFM layer consisting of; a first AFM sub-layer comprising Manganese (Mn); and a second AFM sub-layer directly on top of the first AFM sub-layer and comprising Mn, wherein the second AFM sub-layer has a higher Mn composition than the first AFM sub-layer; and a pinned magnetic layer directly on top of the second AFM sub-layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification