Negative-pressure type magnetic head slider, and method of produ

Details Negative-pressure type magnetic head slider, and method of produ Negative-pressure type magnetic head slider, and method of produ

1990-01-09

1991-05-28

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360122, G11B 560, G11B 1732

Patent

active

050199307

ABSTRACT:
A magnetic head slider having an operating surface on which are formed a pair of air-bearing portions extending in a direction of flow of an air stream into a flying height between the head slider and a recording medium, a cross rail extending between the air-bearing portions, and a pressure-reducing portion formed between the air-bearing portions and downstream of the cross rail. The air-bearing portions, cross rail and pressure-reducing portions cooperate to maintain the amount of the flying height at an optimum value. The slider uses a ferrite single crystal which provides at least the operating surface and which have crystal faces oriented such that the (111) plane of the crystal is not a plane which is parallel to the extension of the downstream edge line of the cross rail, or such that the (111) plane is parallel to the extension of the downstream edge line of the cross rail and is inclined at an angle of at least 60.degree. with respect to the operating surface. The operating surface is formed by chemical etching through an etching mask, by using an aqueous phosphoric acid solution.

REFERENCES:
patent: 4875970 (1989-10-01), Takeya et al.

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