Dynamic magnetic information storage or retrieval – Head – Hall effect
Patent
1996-05-01
1998-06-09
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Head
Hall effect
360121, G11B 530, G11B 529
Patent
active
057644462
ABSTRACT:
A magnetic head structure including a magnetoresistive (MR) head and an inductive head for data storage devices such as tape drives. A method of fabricating a magnetic head utilizing semiconductor-type processing techniques is described that produces an inductive head gap having a substantially flat planar structure throughout in length which, in one embodiment, has a length of 150 microns and a height of one micron. The structure includes a first and second shield, and an MR layer formed therebetween that includes an MR sensor adjacent to the air bearing surface (ABS), leads connected on opposite sides of the MR sensor, and isolated segments situated between the leads and extending all the way to the ABS. A trench (i.e. gap) is formed between the leads and the segments. Preferably, the leads and the segments are deposited simultaneously, and the insulating gap is formed subsequently by photoresist and masking techniques. By isolating the segments electrically, the leads are isolated from short circuits appearing across the ABS, thereby reducing noise, enhancing reliability and providing better performance, while at the same time providing a substantially flat structure upon which to form the inductive head and thereby provide a substantially uniform inductive head gap. Embodiments include merged heads and piggyback heads.
REFERENCES:
patent: 4807074 (1989-02-01), Kamo
patent: 5140484 (1992-08-01), Maruyama
patent: 5283521 (1994-02-01), Ottesen et al.
patent: 5412518 (1995-05-01), Christner et al.
patent: 5465186 (1995-11-01), Bajorek et al.
patent: 5653013 (1997-08-01), Gill
Finn Jorgensen, The Complete Handbook of Magnetic Recording 3rd Edition, pp. 146-147; 1988 Publication Date Sufficiently Early to Preclude Inclusion of Month of Publication.
C. Denis Mee et al., Magnetic Recording, vol. 1, Technology, pp. 270-295; 1987 Publication Date Sufficiently Early to Preclude Inclusion of Month of Publication.
Heinz A. J.
International Business Machines - Corporation
LandOfFree
Magnetic head having an air bearing surface with short-resistant does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic head having an air bearing surface with short-resistant, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic head having an air bearing surface with short-resistant will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2208125