Coating processes – Direct application of electrical – magnetic – wave – or... – Pretreatment of substrate or post-treatment of coated substrate
Patent
1998-02-05
2000-06-13
Beck, Shrive
Coating processes
Direct application of electrical, magnetic, wave, or...
Pretreatment of substrate or post-treatment of coated substrate
427598, 427130, 427131, 427132, 427404, 4274191, 427380, H01F 100
Patent
active
060747072
ABSTRACT:
The present invention provides a method of producing a magnetoresistive element in which a laminate including a free ferromagnetic layer in which at least magnetization is freely rotated according to an external magnetic field, a non-magnetic layer, and a pinned ferromagnetic layer in which reversal of magnetization is pinned is formed, and is heat-treated for setting different directions of the easy axis of magnetization of the free ferromagnetic layer and the pinned ferromagnetic layer under different conditions. In the heat treatment, first annealing is performed at the predetermined temperature in a magnetic field applied in a first direction, and second annealing is performed in a magnetic field applied in a second direction substantially perpendicular to the first direction so that the easy axis of magnetization of the free ferromagnetic layer is substantially perpendicular to that of the pinned ferromagnetic layer.
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Hasegawa Naoya
Makino Akihiro
Nakazawa Yukie
Saito Masamichi
Alps Electric Co. ,Ltd.
Beck Shrive
Strain Paul D.
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