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US 9,548,076 B2Granted
Magnetic devices with overcoats
AssigneeSeagate Technology LLC
InventorsXiaoyue Huang, Seung-Yeul Yang, Steve Riemer, Michael C. Kautzky
Life of this patent
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Abstract
A magnetic device including a magnetic writer; and an overcoat positioned over at least the magnetic writer, the overcoat including oxides of yttrium, oxides of scandium, oxides of lanthanoids, oxides of actionoids, oxides of zinc, or combinations thereof.
Claims20
A magnetic device comprising:
- a near field transducer (NFT);
- and
- an overcoat positioned over at least a portion of the NFT, the overcoat comprising an inner layer in contact with the NFT and an outer layer in contact with the inner layer, wherein the inner layer comprises oxides of yttrium, oxides of scandium, oxides of lanthanoids, oxides of actionoids, oxides of zinc, or combinations thereof.
A magnetic device comprising:
- a near field transducer (NFT);
- and
- an overcoat positioned over at least a portion of the NFT, the overcoat comprising:
- an inner layer in contact with the NFT, the inner layer comprising oxides of yttrium, oxides of scandium, oxides of lanthanoids, oxides of actionoids, oxides of zinc, or combinations thereof;
- and
- an outer layer in contact with the inner layer, the outer layer comprising aluminum oxide (Al2O3), silicon oxide (SiO2), tantalum oxide (Ta2O5), hafnium oxide (HfO2), or combinations thereof.
3 more elements
A magnetic device comprising:
- a magnetic writer, the magnetic writer comprising a near field transducer (NFT);
- a magnetic reader;
- and
- an overcoat positioned over at least the magnetic writer and the magnetic reader, the overcoat comprising:
- an inner layer in contact with the NFT, the inner layer comprising yttrium oxide, scandium, oxide, or combinations thereof;
- and
- an outer layer in contact with the inner layer, the outer layer comprising aluminum oxide (Al2O3), silicon oxide (SiO2), tantalum oxide (Ta2O5), hafnium oxide (HfO2), or combinations thereof.
4 more elements
Dependencies are inferred from the claim text.