H - Electricity – 01 – F
Patent
H - Electricity
01
F
H01F 1/03 (2006.01) G08B 13/24 (2006.01) H01F 10/26 (2006.01) H01F 10/32 (2006.01)
Patent
CA 2198810
A magnetic element comprising a first thin film and a second thin film having a coercive force that is greater than the coercive force of the first thin film formed on a substrate. The magnetic element exhibits a continuous magnetic reversal under an applied alternating magnetic field having a magnitude that is smaller than the coercive force of the second thin film to cause said first thin film to undergo magnetic reversal. The magnetic element also exhibits a discontinuous sudden magnetic reversal under an applied alternating magnetic field having a magnitude that is greater than the coercive force of the second thin film. The configuration of the magnetic element has little effect on discontinuous magnetization response. Thus the magnetic element exhibits good magnetic characteristics even when formed in a small size.
L'invention est un élément magnétique comportant une première couche mince et une seconde couche mince ayant un champ coercitif plus élevé que celui de la première couche mince, laquelle est formée sur un substrat. L'élément subit une inversion magnétique continue quand il est placé dans un champ magnétique alternatif moins intense que le champ coercitif de la seconde couche mince. Il subit également une inversion magnétique soudaine discontinue quand il est placé dans un champ magnétique alternatif plus intense que le champ coercitif de la seconde couche mince. La configuration de l'élément magnétique a peu d'effet sur sa courbe d'aimantation discontinue. L'élément magnétique a donc de bonnes caractéristiques magnétiques même quand il est de petites dimensions.
Furukawa Shinji
Yano Nobuyoshi
Riches Mckenzie & Herbert Llp
Unitika Ltd.
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