Magnetic devices with laminated ferromagnetic structures formed

Details Magnetic devices with laminated ferromagnetic structures formed Magnetic devices with laminated ferromagnetic structures formed

1999-05-05

2000-11-28

Pianalto, Bernard

Stock material or miscellaneous articles

Composite

Of inorganic material

427131, 427132, 428617, 428618, 428619, 428621, 428629, 428632, 428637, 428640, 428651, 428652, 428667, 428671, 428675, 428676, 428679, 428682, 428694TM, 428697, 428699, 428900, 428928, B32B 900, G11B 566

Patent

active

061533203

ABSTRACT:
A magnetic device uses laminated ferromagnetic layers containing antiferromagnetically coupled ferromagnetic films coupled together with improved antiferromagnetically coupling (AFC) films. The AFC films are formed of the binary and ternary alloys comprising combinations of Ru, Os and Re. The ferromagnetic film thicknesses, the AFC film thicknesses and the compositions of the films in the laminated layer can be varied to engineer the magnetic properties of the device. The magnetic devices whose properties are improved with the improved laminated layers include spin valve magnetoresistive read heads and magnetic tunnel junction (MTJ) devices for use as magnetic memory cells and magnetoresistive read heads.

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