Patents Examined by Natthew Kayrish
  • Patent number: 7218485
    Abstract: A free magnetic layer contains free magnetic material layers and an intermediate layer interposed therebetween. A fixed magnetic layer contains fixed magnetic material layers and a non-magnetic intermediate layer interposed therebetween. The free magnetic material layer and the fixed magnetic material layers are formed at equivalent film positions. The magnetizations of the fixed magnetic material layers provided in a vertical direction are antiparallel to each other, and the magnetizations of the free magnetic material layers provided in the vertical direction are antiparallel to each other. By an external magnetic field, the magnetizations of the free magnetic material layer are rotated in phase to magnetization directions of the fixed magnetic material layers.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: May 15, 2007
    Assignee: Alps Electric Co., Ltd.
    Inventors: Naoya Hasegawa, Masamichi Saito