Magnetoresistive transducer conductor configuration

Details Magnetoresistive transducer conductor configuration Magnetoresistive transducer conductor configuration

1992-06-05

1994-05-03

Casaregola, Louis J.

Dynamic magnetic information storage or retrieval

Head

Hall effect

360126, G11B 5127

Patent

active

053093046

ABSTRACT:
In a magnetoresistive transducer, a conductor configuration in which magnetic fields in the conductors are oriented in the same direction to provide symmetric track profiles and improved track edge response. Conductor area at the transducer air bearing surface is also minimized to eliminate shorting and improve device yield and reliability. In one embodiment of the invention, inductive pickup is minimized by limiting the active width of magnetoresistive sensing elements through conductor placement. Another embodiment of the invention, useful for applications involving dual stripe magnetoresistive transducers, minimizes inductive pickup by providing relatively large conductors for each magnetoresistive stripe, arranged in parallel with each other and coupled differentially to cancel inductive pickup through common mode rejection.

REFERENCES:
patent: 3860965 (1975-01-01), Voegeli
patent: 4012781 (1977-03-01), Lin
patent: 4438470 (1984-03-01), Sawada et al.
patent: 4556925 (1985-12-01), Suenaga
patent: 5193038 (1993-03-01), Smith

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