Method of making a narrow pole tip by ion beam deposition

Details Method of making a narrow pole tip by ion beam deposition Method of making a narrow pole tip by ion beam deposition

2005-03-08

2005-03-08

Kim, Paul D (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S603070, C029S603150, C029S603160, C029S603180, C204S192150, C205S119000, C205S122000, C216S039000, C216S041000, 30, 30, 30, C427S127000, C427S128000

Reexamination Certificate

active

06862798

ABSTRACT:
A method of making a magnetic head assembly wherein the magnetic head assembly has a write head with a pole tip includes the steps of forming a shaping layer on an underlying layer wherein the shaping layer has a side surface and a top surface, ion beam sputter depositing a ferromagnetic material layer on the underlying layer and on the side and top surfaces of the shaping layer and removing first and second portions of the ferromagnetic material layer from the underlying layer and the top surface of the shaping layer, respectively, leaving a remaining portion of the ferromagnetic material layer on the side surface of the shaping layer which is the aforementioned pole tip.

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“Highly defined narrow track write heads fabricated by focused ion beam trimming with the AI2O3 refilling process”; Ishi, T.; Nonaka, Y.; Matsubara, T.; Ishiwata, N.; Magnetics, vol.: 35 , Issue: 5 , Sept. 1999; pp. 2541-2543.*
U.S. Appl. No. 09/944,648, filed Aug. 31, 2001.

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