Method for fabricating a dual element head

Details Method for fabricating a dual element head Method for fabricating a dual element head

1999-01-26

2000-08-01

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

2960315, G11B 542

Patent

active

06094806&

ABSTRACT:
A method for fabricating a dual element head is disclosed. One embodiment includes first depositing a first head element upon a substrate and second depositing a second head element upon the first head element. Each of the depositing steps includes a tolerance that is independent of the other. In the second depositing step, the functional width of the second head element (i.e., the write width if the second head element is a write element) is made wider than a desired functional width for the second head element. The second head element is then trimmed to substantially achieve the desired functional width while using a portion of the first head element as a reference to reduce errors associated with the independent nature of the first and second tolerances. For instance, the portion of the first head element used as a reference can be an edge of a magnetoresistive (MR) read element that defines the read width of the read element. Preferably, the trimming step includes creating erase notches on a portion of the write element that are capable of erasing data from a recording medium. Thereafter, second notches that are deeper than the erase notches and hence less capable of erasing data than the erase notches are created next to the erase notches to adjust the width of the erase notches. It is also preferred that the first head element and the second head element include an air bearing surface that resides substantially in the x-z plane, and that the second head element is trimmed by a focussed ion beam from a direction that includes a y-component to adjust the width of the second head element in the z-direction.

REFERENCES:
patent: 4367505 (1983-01-01), Stromsta et al.
patent: 4386383 (1983-05-01), Desserre et al.
patent: 4613920 (1986-09-01), Higuchi et al.
patent: 4691260 (1987-09-01), Hosaka et al.
patent: 4992901 (1991-02-01), Keel et al.
patent: 5229901 (1993-07-01), Mallary
patent: 5438747 (1995-08-01), Krounbi et al.
"Disk Drive Technology" distributed by KnowledgeTek at training seminar in Longmont, Colorado, Dec. 14-16, 1998, p. 5-19.

Affiliated with

Also associated with

Rating

Method for fabricating a dual element head does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for fabricating a dual element head, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for fabricating a dual element head will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-652151