Combination read/write thin film magnetic head with slant surfac

Details Combination read/write thin film magnetic head with slant surfac Combination read/write thin film magnetic head with slant surfac

1997-08-27

1999-09-07

Renner, Craig A.

Dynamic magnetic information storage or retrieval

Head

Head surface structure

360113, 360120, 360126, G11B 5187, G11B 539, G11B 5235, G11B 531

Patent

active

059496258

ABSTRACT:
A combination read/write thin film magnetic head includes an upper-core layer and a lower-core layer sandwiching a gap layer for writing data on a recording medium. The head also includes a magnetoresistive sensor layer for reading data from the recording medium. The magnetoresistive sensor layer is sandwiched by a lower-shielding layer and the lower-core layers, which also serves as an upper shielding layer. Each of the layers is arranged in parallel to one another. The width of the upper-core layer defines the width of a recording track. The width of the gap layer is made equal in length to the width of the upper-core layer to reduce magnetic leakage outside the recording track at the gap layer. The lower-core layer includes a prominence and a lower-core body. The prominence is made narrower to reduce magnetic leakage outside the recording track between the upper-core layer and the prominence. The lower-core body has slanted surfaces extending away from the upper-core layer. The slanted surface reduce magnetic leakage outside the recording track between the upper-core layer and the lower-core body.

REFERENCES:
patent: 5168409 (1992-12-01), Koyama et al.
patent: 5438747 (1995-08-01), Krounbi et al.
patent: 5452164 (1995-09-01), Cole et al.
patent: 5639509 (1997-06-01), Schemmel

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