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THIN FILM MAGNETIC HEAD HAVING A BIAS MAGNETIC LAYER PROVIDED WITH ANTIFERROMAGNETIC LAYER AND A PINNED LAYER PROVIDED WITH HARD MAGNETIC LAYER
THIN FILM MAGNETIC HEAD HAVING A BIAS MAGNETIC LAYER PROVIDED WITH ANTIFERROMAGNETIC LAYER AND A PINNED LAYER PROVIDED WITH HARD MAGNETIC LAYER
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机译:薄膜磁头具有带反铁磁层的偏磁层和带硬磁层的钉层
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摘要
A thin film magnetic head has: a spin valve having a pinned layer whose magnetization direction is fixed relative to an external magnetic field, a first nonmagnetic intermediate layer which is disposed on said pinned layer, and a free layer whose magnetization direction is changed according to the external magnetic field, said free layer being disposed on said first nonmagnetic intermediate layer; and bias magnetic layers for applying a bias magnetic field to said free layer, said bias magnetic layers being provided on both sides of said spin valve with regard to a track width direction thereof. The pinned layer has a hard magnetic layer, a second nonmagnetic intermediate layer which is disposed on said hard magnetic layer, and a ferromagnetic layer which is disposed on said second nonmagnetic intermediate layer. The bias magnetic layer has a bias antiferromagnetic layer, and a bias ferromagnetic layer which is disposed on said bias antiferromagnetic layer. The pinned layer is formed in a manner such that a height direction dimension thereof is longer than a track width direction dimension thereof, and is longer than a height direction dimension of said free layer.
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