Thin film magnetic head

Details Thin film magnetic head Thin film magnetic head

1994-06-24

1997-03-11

Kiliman, Leszek

Stock material or miscellaneous articles

Composite

Of inorganic material

428668, 428679, 428694R, 428694T, 428694TM, 428900, 360126, G11B 566, G11B 5147, B32B 900

Patent

active

056099711

ABSTRACT:
A thin film magnetic head comprising a lower magnetic core layer 9 and an upper magnetic core layer 12 formed over the core layer 9 with a coil layer 10, a gap spacer layer 11 and an insulating layer provided therebetween, the core layers 9 and 12 each having a core tip region c between a core tip a and a portion b increasing in core width. The core layers 9 and 12 are each formed by a magnetic thin film of NiFe having a positive magnetostriction constant of not greater than 1.times.10.sup.-6 in absolute value and containing 17.5 to 19.5 wt. % of Fe.

REFERENCES:
patent: 4190872 (1980-02-01), Jones et al.
patent: 4504880 (1985-03-01), Church et al.
patent: 5038334 (1982-02-01), Mallary
patent: 5085335 (1992-02-01), Mallary
patent: 5132858 (1992-07-01), Andricacos
patent: 5264981 (1993-11-01), Campbell
patent: 5384680 (1985-01-01), Mellary

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