Method of manufacturing a thin-film magnetic head with a nickel-

Details Method of manufacturing a thin-film magnetic head with a nickel- Method of manufacturing a thin-film magnetic head with a nickel-

1978-08-18

1980-12-16

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

204 35R, 204 38R, 204 40, 204 43T, 156628, 156656, 430318, 252 793, 360122, 360127, C23F 102

Patent

active

042395879

ABSTRACT:
In the electrodeposition of nickel-iron alloy layers during the manufacture of a thin-film magnetic head it is ensured that the nickel-iron alloy layer has a top layer having a higher iron content than the iron content of the remainder of the nickel-iron alloy layer. Since this top layer etches more rapidly than the remainder of the layer, the nickel-iron alloy layer itself becomes sloped during etching, this sloping configuration presents great advantages in the subsequent coating with a layer of silicon dioxide.

REFERENCES:
patent: 3808070 (1974-04-01), Jordan
patent: 3892606 (1975-07-01), Chappelow et al.

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