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Exchange coupling film having a plurality of local magnetic regions, magnetic sensor having the exchange coupling film, and magnetic head having the same
Exchange coupling film having a plurality of local magnetic regions, magnetic sensor having the exchange coupling film, and magnetic head having the same
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机译:具有多个局部磁区的交换耦合膜,具有交换耦合膜的磁传感器和具有该耦合膜的磁头
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摘要
An exchange coupling film, magnetic sensor having the exchange coupling film, and a magnetic head having the same. The exchange coupling film includes a ferromagnetic layer and an antiferromagnetic layer where a total a magnetic anisotropy is controlled to be dispersed by annealing or depositing the film in rotating magnetic fields. Small local magnetic regions of different uniaxial anisotropy are introduced in the exchange coupling film. The magnetic anisotropy dispersion of the exchange coupling film results in prohibiting large domain wall transfer of an irreversible change in magnetization direction and suppressing BHN.
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