Contoured pole tip structures for minimizing side track erasure

Details Contoured pole tip structures for minimizing side track erasure Contoured pole tip structures for minimizing side track erasure

1997-12-22

2000-09-19

Klimowicz, William

Dynamic magnetic information storage or retrieval

Head

Head surface structure

360113, 360126, G11B 5187

Patent

active

061221449

ABSTRACT:
A write head is provided that has an "I" shaped pole tip structure. Flux leakage between bottom corners of a top horizontal component to a bottom horizontal component of the "I" shaped pole tip structure is obviated by rounding or tapering the side edges of the top horizontal component as it recesses into the head from the ABS. The angle taken by each recessed side edge with respect to the ABS edge is less than 90.degree. so that flux concentrations at the corners are minimized and flux leakage from these corners to the bottom horizontal component is substantially eliminated. In another embodiment of the invention the top horizontal component is configured with a necked down portion between front and rear portions for minimizing flux saturation of other pole tip components.

REFERENCES:
patent: 5719730 (1998-02-01), Chang et al.
patent: 5726841 (1998-03-01), Tong et al.
patent: 5801910 (1998-09-01), Mallary

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