Seagate Technology Incorporated

Elzbieta Janina Haftek

Allan E Schultz

Frank Edgar Stageberg

Richard P Larson

Feng Y Wang

James Keith Price

Kenneth P Ash

A magnetic transducer having a top pole and a bottom pole where the top pole is separated from the bottom pole by a gap layer. The top pole has a lower portion that faces the bottom pole. A middle section of the lower portion is separated from the bottom pole by a first distance and end sections of the lower portion are separated from the bottom pole by a second distance not equal to the first distance. The second distance is greater than 25% of the first distance.

Writer design eliminating transition curvature for very narrow writer widths

A process of forming a two-piece pole for an inductive write head involves first forming a first pole piece having a width between opposite side surfaces defining a gap width of a transducing gap at an air bearing surface of the head. The process next involves forming a second pole piece having a first region remote from the air bearing surface and a second region extending from the first region toward the air bearing surface. The first region is wider than the width of the first pole piece. The second pole piece is formed so that at least a portion of the second region is contiguous a portion of the first pole piece and so that no sharp external corners exist between the first pole tip piece and the second pole piece within a pole tip region of the head.

Method for forming a narrow track inductive write head having two-piece pole

A two-piece pole for an inductive write head has a first pole piece in the tip region contiguous the gap and confronting the other pole across the gap. The first pole piece has a width defining the gap width of the write head at the air bearing surface. A second pole piece is connected to the first pole piece and extends to the back gap. At least a portion of the second pole piece is connected to the first pole piece and has a width larger than the width of the first pole piece. The second pole piece means has surfaces within the pole tip region that intersect at external corners facing the gap, at least two surfaces of each of these external corners being joined at an obtuse angle so that none of said external corner is a sharp external corner, thereby minimizing fringe fields. In one form, a pole cap between the first and second pole pieces has a trapezoidal configuration forming the obtuse angles.

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Eden Prairie, MN, United States of America

Elzbieta Janina Haftek