Transducer utilizing giant magnetoresistance effect and having a

Details Transducer utilizing giant magnetoresistance effect and having a Transducer utilizing giant magnetoresistance effect and having a

1997-11-26

2000-07-04

Patidar, Jay

Electricity: measuring and testing

Magnetic

Magnetometers

360113, 338 32R, G01R 3302

Patent

active

060844051

ABSTRACT:
A magnetoresistive transducer showing a giant magnetoresistance effect has a multi-layer structure including first and second ferromagnetic layers separated by a non-magnetic layer. The second ferromagnetic layer has a magnetization pinned in a direction perpendicular to a direction of a signal magnetic field. An anti-ferromagnetic layer adjacent to the second ferromagnetic layer pins magnetization of the second ferromagnetic layer in a direction perpendicular to a direction of a signal magnetic field so that magnetizations of the first and second ferromagnetic layers have components perpendicular to the signal magnetic field and those components are anti-parallel to each other.

REFERENCES:
patent: 5206590 (1993-04-01), Dieny et al.
patent: 5705973 (1998-01-01), Yuan et al.
Ching Tsang et al., "Design, fabrication & testing of spin-valve read heads for high density recording", pp. 3801-3806, IEEE Transactions On Magnetics, vol. 30, No. 6, Nov. 1994.

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