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US 7,064,930 B2Granted
Slider deposits for control of pole-to-disc spacing
AssigneeSeagate Technology LLC
InventorsCatalin I. Serpe, Ladislav R. Pust, Moshe Olim, Mary C. Hipwell, John R. Pendray
Life of this patent
Estimating the term…
Abstract
A head for a disc drive and a method of making the head. The head includes a substrate with a trailing side and a first air bearing surface that generates lift. A magnetic transducer is deposited along the trailing side and has a pole tip that is spaced apart from a disc by a pole-to-disc spacing. The head also includes a deposit along the trailing side. The deposit includes a second air bearing surface that changes position relative to the first air bearing surface as temperature increases.
Claims30
A head, comprising:
- a substrate including a substrate surface and a substrate trailing side;
- an overcoat layer positioned along the substrate trailing side;
- a transducer positioned between the substrate and the overcoat layer and having a trailing edge;
- and
- a first deposit positioned along the substrate trailing side at least partially past the trailing edge, the first deposit including a first temperature compensating bearing surface that changes position relative to the substrate surface as temperature increases, and at least a portion of the first deposit has a coefficient of temperature expansion that is greater than a coefficient of temperature expansion of the transducer.
2 more elements
A head, comprising:
- a substrate including a substrate trailing side, and a substrate surface that forms a part of a bearing surface;
- an overcoat layer positioned along the substrate trailing side;
- a transducer positioned between the substrate and the overcoat layer and having a trailing edge;
- and
- a first deposit positioned along the substrate trailing side and extending past a portion of the transducer toward the trailing edge, the first deposit including a temperature compensating deposit surface that changes position relative to the substrate surface as temperature increases and at least a portion of the first deposit has a coefficient of temperature expansion that is greater than a coefficient of temperature expansion of the transducer, and further wherein the temperature compensating deposit surface forms a part of the bearing surface.
2 more elements
Dependencies are inferred from the claim text.