Non linear magnetoresistive sensor

Details Non linear magnetoresistive sensor Non linear magnetoresistive sensor

1987-02-17

1989-06-20

Hecker, Stuart N.

Dynamic magnetic information storage or retrieval

Head

Hall effect

G11B 5127, G11B 533

Patent

active

048413984

ABSTRACT:
A non linear magnetoresistive sensor having a magnetoresistive strip with no transverse biasing (either permanent or current) such that the sensor is operated in its non linear mode. The sensor is useful in its non linear mode to determine the location of pulse peaks from encoded data from a medium by differentiating and determining the zero crossings of the detected signal.

REFERENCES:
patent: 3887944 (1975-06-01), Bajorek et al.
Meiklejohn et al., "New Magnetic Anisotrophy," Physical Review, Jun. 1, 1956, vol. 102, No. 5, pp. 1413-1414.
Glazer et al., "Stabilization of the Ferromagnetic Domain Structure in Thin Films with Exchange Anisotrophy," Institute of Metal Physics, Dec. 6, 1987, vol. 26, No. 2, pp. 103-110.
Tsang, "Magnetics of Small MR Sensors", IBM Magnetic Recording Institute.
Tsang et al., "Temperature Dependance of Unidirectional Anisotrophy Effects in the Permalloy-FeMn Systems," Journal of Applied Physics, Mar. 1982, vol. 53, No. 3, pp. 2605-2607.
Tsang et al., "Study of Domain Formation in Small Permalloy Magnetoresistive Elements," Journal of Applied Physics, Mar. 1982, vol. 53, No. 3, pp. 2602-2604.

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