Magnetoresistive head having defined relationships between...

Details Magnetoresistive head having defined relationships between... Magnetoresistive head having defined relationships between...

2007-04-17

2007-04-17

Heinz, A. J. (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

Reexamination Certificate

active

10786270

ABSTRACT:
In a narrow magnetoresistive head having a magnetic domain control film comprising a single layer of magnetic film or magnetic films antiferromagnetically coupled by means of a nonmagnetic member, it has been found that the magnetic domain can be controlled with a smaller magnetization film thickness product than anticipated so far and the range is defined relative to the geometrical track width in the present invention. By defining the magnetization film thickness product of the magnetic domain control film within a prescribed range of the invention, a magnetic head having higher output than usual and having stable output with no hysteresis in the transfer curve and with no output fluctuation can be attained.

REFERENCES:
patent: 4663685 (1987-05-01), Tsang
patent: 5018037 (1991-05-01), Krounbi et al.
patent: 6714388 (2004-03-01), Hasegawa et al.
patent: 6807033 (2004-10-01), Zhu
patent: 6982932 (2006-01-01), Sakakima et al.
patent: 2003/0053269 (2003-03-01), Nishiyama
patent: 11-273030 (1999-10-01), None

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