Storage Technology Corporation

Matsushita-kotobuki Electronics, Industries, Ltd.

John P Biesecker

Larry E Daby

James C Cates

Francis Campos

Charles Partee

Robert B Chesnutt

Steve Sanders

John C Fleming

Mike Jennison

Pierre Asselin

A method of fabricating a magnetic writer includes depositing a wear-resistant bottom pole tip layer on a bottom pole; depositing a write gap layer on the bottom pole tip layer; and depositing a wear-resistant top pole tip layer on the write gap layer. The layers are patterned such that the write gap layer and the top pole tip layer each have a track width facing a media surface and the write gap layer and the top pole tip layer each have the same length equal to a throat height between the media surface and a zero throat location. The bottom pole tip layer and the bottom pole are patterned such that the bottom pole tip layer has the track width facing the media surface and the bottom pole has a bottom pole tip at the media surface with the bottom pole tip having the track width facing the media surface.

Magnetic head having writer with embedded write gap between wear-resistant pole tip layers

A method of fabrication and a magnetic transducer having an inverted write element with a zero delta in pole tip width to provide improved bi-directional control over write track width and written erase bands on media. The transducer includes a top pole and a bottom pole configured to provide the same write track width and relatively small erase bands when either pole is the trailing pole depending on direction of movement of the media relative to the transducer. The bottom pole has an upper portion and a lower portion. The bottom pole upper portion width is less than the bottom pole lower portion width. The top pole has a main portion formed opposite to the bottom pole upper portion. The top pole main portion has a main portion width which is equal to the bottom pole upper portion width.

Magnetic transducer having inverted write element with zero delta in pole tip width

A method of fabricating a thin film magnetic transducer and the resulting transducer structure is disclosed. The method starts with the formation of a bottom pole having an upper portion and a lower portion in a zero throat region. The upper portion has an upper portion width and the lower portion had a lower portion width, wherein the lower portion width is greater than the upper portion width. A gap layer is then formed over the bottom pole, and the top pole is formed over the gap layer. The top pole width is greater than the bottom pole's lower portion width. In one embodiment, a planarization layer is deposited overlaying the bottom pole prior to formation of the gap layer. Lapping is then performed to reduce the planarization layer and the bottom pole's upper portion to a flat surface suitable for receiving the gap layer deposition.

Inverted write head with high-precision track width definition

A head structure for writing data on a magnetic media including a first pole having an upper surface and a write gap covering a portion of the upper surface. An upper pole tip formed on the write gap having a first width. A second pole having a second width greater than the first width and coupling to an upper surface of the upper pole tip. A conductive coil magnetically coupled to the first pole and the second pole to induce magnetic flux within the first and second pole in response to a current flowing in the coil.

Method and structure for defining track width on a recording head

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Boulder, CO, United States of America

John P Biesecker