Magnetic thin film head zero throat pole tip definition

Details Magnetic thin film head zero throat pole tip definition Magnetic thin film head zero throat pole tip definition

1996-07-15

2000-08-15

Nguyen, Nam

Chemistry: electrical and wave energy

Processes and products

Coating, forming or etching by sputtering

216 22, 427128, 427130, 427131, 427523, 427531, 205 80, 205 90, C23C 1434, B05D 512

Patent

active

061030732

ABSTRACT:
A thin film magnetic head has a sharply defined zero throat location in the pole tip members utilizing a superior magnetic pole tip material having high resistivity and high magnetic induction. The zero throat location is defined by first depositing a first pole tip member on a first magnetic pole member which may be formed by plating and need not be composed of the same superior magnetic material as the first pole tip member. By etching the zero throat edge of the first pole tip member, a clearly defined edge location is produced. The second pole tip member of superior magnetic material is then deposited on an insulating gap layer which is formed on the lower pole tip member.

REFERENCES:
patent: 4589042 (1986-05-01), Anderson et al.
patent: 4878290 (1989-11-01), Masud et al.
patent: 5285340 (1994-02-01), Ju et al.
patent: 5606478 (1997-02-01), Chen et al.

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