Process for providing a magnetic recording transducer with enhanced pinning layer stability
First Claim
1. A method for providing a magnetic recording transducer with high pinning field stability, the method comprising:
- providing a bottom structure comprising a substrate, a magnetic shield above the substrate, a magnetic seed layer above the shield, a first nonmagnetic spacer layer above the magnetic seed layer, and a layer of antiferromagnetic (AFM) material on the first nonmagnetic spacer layer;
heating the bottom structure to a temperature of at least 373 Kelvin (K);
cooling the bottom structure until the temperature of the bottom structure is reduced to less than 293K;
depositing a pinned layer on the AFM layer;
providing a second nonmagnetic spacer on the pinned layer, andproviding a top structure on the second nonmagnetic spacer.
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Abstract
A method is provided for providing a magnetic recording transducer having a pinning layer with high pinning field stability. A bottom structure comprising a substrate, a magnetic shield above the substrate, a magnetic seed layer above the shield, a nonmagnetic spacer layer above the magnetic seed layer, and a layer of antiferromagnetic (AFM) material on the nonmagnetic spacer layer is provided. The bottom structure is heated to a temperature of at least 373 Kelvin (K) and then the bottom structure is cooled until the temperature of the structure is reduced to less than 293K. A pinned layer is deposited on the AFM layer, a nonmagnetic spacer is provided on the pinned layer, and a read sensor fabricated above the nonmagnetic spacer. In one embodiment, cooling the structure comprises reducing the temperature of the structure by at least 100K in less than 25 minutes.
38 Citations
13 Claims
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1. A method for providing a magnetic recording transducer with high pinning field stability, the method comprising:
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providing a bottom structure comprising a substrate, a magnetic shield above the substrate, a magnetic seed layer above the shield, a first nonmagnetic spacer layer above the magnetic seed layer, and a layer of antiferromagnetic (AFM) material on the first nonmagnetic spacer layer; heating the bottom structure to a temperature of at least 373 Kelvin (K); cooling the bottom structure until the temperature of the bottom structure is reduced to less than 293K; depositing a pinned layer on the AFM layer; providing a second nonmagnetic spacer on the pinned layer, and providing a top structure on the second nonmagnetic spacer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification