Thin film heads with insulated laminations for improved high fre

Details Thin film heads with insulated laminations for improved high fre Thin film heads with insulated laminations for improved high fre

1996-07-12

1998-05-12

Zirker, Daniel

Stock material or miscellaneous articles

Composite

Of inorganic material

428694TS, 428694TM, 428694T, 428692, 428900, 335297, 360126, G11B 566

Patent

active

057502757

ABSTRACT:
A magnetic thin film recording head includes laminated magnetic pole members, adjacent pole members being separated from each other by nonmagnetic insulating layers to reduce eddy current effects between the laminated members. The nonmagnetic insulating layers extend from the throat region of the head toward the pole tip region and terminate at a distance from the air bearing surface which is a function of the skin depth of the magnetic pole material for the particular recording frequency range being employed in the head.

REFERENCES:
patent: 4983465 (1991-01-01), Shimizu et al.
patent: 5026614 (1991-06-01), Itoh et al.
patent: 5061576 (1991-10-01), Shimizu et al.
patent: 5576098 (1996-11-01), Arimoto et al.
patent: 5609971 (1997-03-01), Matono et al.

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