Method of producing giant magnetoresistive material film and mag

Details Method of producing giant magnetoresistive material film and mag Method of producing giant magnetoresistive material film and mag

1996-10-15

1997-11-18

Nguyen, Nam

Chemistry: electrical and wave energy

Processes and products

Coating, forming or etching by sputtering

20419215, 427127, 427131, C23C 1434

Patent

active

056883803

ABSTRACT:
A giant magnetoresistive material film includes at least two ferromagnetic layers of a NiFe alloy or NiFeCo alloy, which are formed on a substrate through a nonmagnetic layer of Au, Ag, Cu or Cr, wherein magnetization of at lest one of the ferromagnetic layers is pinned by a coercive force increasing layer of .alpha.-Fe.sub.2 O.sub.3 provided adjacent thereto and having a thickness of 200 to 1000 .ANG. so as to increase coercive force of the ferromagnetic layer, and the other ferromagnetic layer has free magnetization so as to produce a change in resistance at a low magnetic field. The present invention also provides a method of producing the giant magnetoresistive material film and a magnetic head provided with the giant magnetoresistive material film.

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patent: 5546253 (1996-08-01), Che

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