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US 2016/0260447 A1Published application
Recording read heads with a multi-layer afm layer methods and apparatuses
AssigneeWestern Digital (Fremont), LLC
InventorsYUANKAI ZHENG, QUNWEN LENG
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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.
Claims16
A method of manufacturing a read head, comprising:
- fabricating a multi-layer anti-ferromagnetic (AFM) layer, the multi-layer AFM layer comprising a first AFM sub-layer and a second AFM sub-layer, the first AFM sub-layer and the second AFM sub-layer having different Manganese (Mn) compositions;
- and
- sandwiching the multi-layer AFM layer between a pinned layer and a spacer.
A method of fabricating a multi-layer anti-ferromagnetic (AFM) layer, comprising:
- depositing a first AFM sub-layer from a target using a first gas;
- and
- depositing a second AFM sub-layer on top of the first AFM sub-layer from the target using a second gas;
- wherein the multi-layer AFM layer has gradient Manganese (Mn) compositions, the second AFM sub-layer has a higher Manganese (Mn) composition than the first AFM sub-layer, and the first gas is different from the second gas.
1 more element
Dependencies are inferred from the claim text.