Magnetic devices with enhanced poles

Details Magnetic devices with enhanced poles Magnetic devices with enhanced poles

1996-11-04

1998-11-03

Kiliman, Leszek

Stock material or miscellaneous articles

Composite

Of inorganic material

428694R, 428900, 428547, 428599, 428250, 428294, 427128, 427130, 427509, 427531, 336234, 307106, 307415, 2041922, 148304, 148311, 148312, 148403, G11B 566, C23C 1414

Patent

active

058305874

ABSTRACT:
A process resulting in enhanced pole performance, relative to permalloy poles, in narrow track magnetic devices. A preferred process includes increasing the anisotropy field of the pole material while maintaining an acceptable coercivity level and near zero magnetostriction. One embodiment utilizes a NiCoFe alloy containing 22% cobalt by weight, heat treated in an easy axis magnetic field in a non-oxidizing atmosphere. This process achieves favorable domain structures at narrow pole tip widths.

REFERENCES:
patent: 5571573 (1996-11-01), Shukovsky

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