Magnetoresistive sensor utilizing a granular magnetoresistive la

Details Magnetoresistive sensor utilizing a granular magnetoresistive la Magnetoresistive sensor utilizing a granular magnetoresistive la

1995-05-22

2000-01-18

Davis, David D.

Dynamic magnetic information storage or retrieval

Head

Hall effect

G11B 539

Patent

active

060162414

ABSTRACT:
A heterogeneous thin film structure including a discontinuous layer of ferromagnetic material deposited on an insulating substrate and overcoated with a layer of nonmagnetic electrically conductive material exhibits giant magnetoresistance in saturation fields on the order of 350 Oersteds. A layer of ferromagnetic material is deposited on a heated insulating substrate by high vacuum evaporation techniques to form a layer of isolated ferromagnetic particles and overcoated with a nonmagnetic conductive material to form a plurality of ferromagnetic particles embedded in a nonmagnetic conductive matrix. As the ferromagnetic and nonmagnetic materials are deposited separately, it is not required that the two materials be immiscible and subsequent annealing is not required to induce phase separation.

REFERENCES:
patent: 4609950 (1986-09-01), Chiba et al.
patent: 4663242 (1987-05-01), Pryor et al.
patent: 4896235 (1990-01-01), Takino et al.
patent: 4949039 (1990-08-01), Grunberg
patent: 5043693 (1991-08-01), Edelstein
patent: 5159513 (1992-10-01), Dieny et al.
patent: 5206590 (1993-04-01), Dieny et al.
patent: 5268043 (1993-12-01), McCowen
patent: 5462809 (1995-10-01), Berkowitz
J. Q. Xiao et al., "Giant Magnetoresistance In Nonmultilayer Magnetic Systems", Physical Review Letters, vol. 68, No. 25, Jun. 22, 1992, pp. 3749-3752.
D. A. Thompson et al., "Thin Film Magnetoresistors in Memory, Storage, and Related Applications", IEEE Transactions on Magnetics, vol. MAG-11, No. 4, Jul. 1975, pp. 1039-1050.
H. Suyama et al., "Thin Film MR Head For High Density Rigid Disk Drive", IEEE Transactions on Magnetics, vol. 24, No. 6, Nov. 1988, pp. 2612-2614.
A. E. Berkowitz et al., "Giant Magnetoresistance in Heterogeneous Cu-Co Alloys", Physical Review Letters, vol. 68, No. 25, Jun. 22, 1992, pp. 3745-3748.
J. A. Barnard et al., "`Giant` magnetoresistance observed in single layer Co-Ag alloy films", Letter To The Editor, Journal of Magnetism and Magnetic Materials, 114(1992), pp. L230-234.
J. S. Jiang et al., "Magnetic properties and giant magnetoresistance of granular permalloy in silver", Appl. Phys. Lett. 61(19), Nov. 9, 1992, pp. 2362-2364.
C.L. Chien, "Granular Magnetic Solids," J. Appl. Phys. 69(8), Apr. 15, 1991, pp. 5267-5272.
J.R. Childress et al, "Granular Cobalt in a Metallic Matrix" J. Appl. Phys. 70(10) Nov. 15, 1991, pp. 5885-5887.

Affiliated with

Also associated with

Rating

Magnetoresistive sensor utilizing a granular magnetoresistive la does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetoresistive sensor utilizing a granular magnetoresistive la, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetoresistive sensor utilizing a granular magnetoresistive la will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-567185