Magnetic recording head with a point writer pole
AssigneeSeagate Technology LLC
InventorsJames K. Price, Amin Nurul, Alaxender M. Shukh, Feng Wang, Martin L. Plumer
Life of this patent
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Abstract
A magnetic recording head having a write pole formed in a point. The narrow width of the write pole can be manufactured using existing equipment, reduces the number of steps required to build the recording head, and results in a recording head that has other advantages. Forming the write pole in a point is done using two masking steps and mill processing. The writer and reader are positioned next to each other so that the second masking step which forms the point of the writer pole also defines the back edge of the stripe.
Claims18
A magnetic transducing head comprising:
- a reader for reading data back from a magnetic medium;
- and
- a writer for writing data to a magnetic medium, separated from the reader in a distinct side-by-side and substantially coplanar configuration, such that the writer and reader are not in contact, the writer comprising a yoke and a write pole at least partially overlying the yoke, the write pole having a write pole tip that extends beyond the yoke, the write pole tip having first and second pole edges that converge as they extend beyond the yoke, such that the write pole has essentially no break point.
A transducer comprising:
- a substrate;
- a reader proximate the substrate for reading data back from a magnetic medium;
- and
- a writer proximate the substrate and separated from the reader in a distinct side-by-side and substantially coplanar configuration, such that the writer and reader are not in contact, wherein the writer comprises a yoke and a write pole, the write pole having a pointed write pole tip that extends beyond the yoke to the air bearing surface, the write pole tip having first and second pole edges that converge as they approach the air bearing surface, such that the write pole has essentially no break point.
A method of forming a magnetic transducing head having a small write pole dimension, the method comprising:
- forming a read sensor;
- forming a yoke separated from the read sensor in a distinct side-by-side and substantially coplanar configuration, such that the yoke and the read sensor are not in contact;
- depositing a write pole material at least partially over and extending beyond the yoke;
- forming a first write pole edge in the write pole material that extends beyond the yoke;
- applying a mask to define a second write pole edge in the write pole material and a back edge of the read sensor;
- and
- forming the back edge of the read sensor and the second write pole edge in the write pole material such that the second write pole edge extends beyond the yoke and the first and second write pole edges converge to create a pointed write pole having essentially no break point, the pointed write pole having a pointed write pole tip that extends beyond the yoke.
A method of forming a transducer having a small pole dimension, the method comprising:
- forming a reader;
- forming a yoke separated from the reader in a distinct side-by-side and substantially coplanar configuration, such that the yoke and the reader are not in contact;
- depositing a write pole material at least partially over and extending beyond the yoke;
- masking a first write pole edge on the write pole material extending beyond the yoke;
- milling the write pole material to form the first write pole edge;
- masking the reader and the write pole material extending beyond the yoke;
- milling the write pole material and the reader to form a second write pole edge and a back edge of the reader, wherein the first write pole edge and the second write pole edge converge to form a pointed write pole having essentially no break point, the pointed write pole having a pointed write pole tip extending beyond the yoke.
Dependencies are inferred from the claim text.