Very low noise magnetoresistive sensor for high density media ap

Details Very low noise magnetoresistive sensor for high density media ap Very low noise magnetoresistive sensor for high density media ap

1989-08-01

1991-03-19

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Head

Hall effect

G11B 5127

Patent

active

050015869

ABSTRACT:
A soft film biased magnetoresistive sensor (10) is fabricated to have reduced Barkhausen noise. The magnetic ratio of the film layers (14 and 18) is controlled to be in the range of 1.7 to 1.95 and the optimum bias point is controlled to be in the range of 35 and 41 degrees.

REFERENCES:
patent: 3848217 (1974-11-01), Lazzari
patent: 3967368 (1976-07-01), Brock et al.
patent: 4477794 (1984-10-01), Nomura et al.
patent: 4782413 (1988-11-01), Howard et al.

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