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    • 4. 发明授权
    • Microwave assisted magnetic head
    • 微波辅助磁头
    • US08107352B1
    • 2012-01-31
    • US12852775
    • 2010-08-09
    • Noboru YamanakaTakuya AdachiIsamu SatoHiroshi Ikeda
    • Noboru YamanakaTakuya AdachiIsamu SatoHiroshi Ikeda
    • G11B7/00G11B5/147
    • G11B5/314G11B5/1278G11B2005/0024
    • A microwave assisted magnetic head is formed to include a main pole magnetic layer including a main pole; a shielded magnetic layer including a shielded pole; a recording coil that is formed to generate a writing magnetic field from a tip of the main pole; and a microwave radiation waveguide made of a conductive nonmagnetic material that is disposed in a recording gap, the recording gap being a gap between the main pole and the shielded pole. The main pole magnetic layer and the shielded magnetic layer have an intermediate connection part that connects the layers at a depth-side, and an electrical insulation magnetic film is disposed in the intermediate connection part, and the main pole and the shielded pole are electrically connected with the microwave radiation waveguide that is disposed in the recording gap, which is the gap between the main pole and the shielded pole so that a simple configuration, with a relatively easy and efficient manufacturing process, is realized that overlaps AC magnetic fields in an in-plane direction of a microwave band, which is the same as, or close to, a ferromagnetic resonant frequency of a medium recording layer.
    • 微波辅助磁头形成为包括主极的主极磁性层; 包括屏蔽极的屏蔽磁性层; 形成为从主极的尖端产生书写磁场的记录线圈; 以及设置在记录间隙中的由导电非磁性材料制成的微波辐射波导,记录间隙是主极和屏蔽极之间的间隙。 主极磁性层和屏蔽磁性层具有在深度侧连接层的中间连接部,并且在中间连接部中设置电绝缘性的磁性膜,并且主极和屏蔽极电气连接 利用布置在作为主极和屏蔽极之间的间隙的记录间隙中的微波辐射波导,从而实现了具有相对简单和有效的制造工艺的简单配置,其与交流磁场重叠, 与介质记录层的铁磁谐振频率相同或接近的微波频带的平面方向。
    • 9. 发明申请
    • MICROWAVE ASSISTED MAGNETIC HEAD
    • MICROWAVE辅助磁头
    • US20120033534A1
    • 2012-02-09
    • US12852775
    • 2010-08-09
    • Noboru YAMANAKATakuya AdachiIsamu SatoHiroshi Ikeda
    • Noboru YAMANAKATakuya AdachiIsamu SatoHiroshi Ikeda
    • G11B11/00
    • G11B5/314G11B5/1278G11B2005/0024
    • A microwave assisted magnetic head is formed to include a main pole magnetic layer including a main pole; a shielded magnetic layer including a shielded pole; a recording coil that is formed to generate a writing magnetic field from a tip of the main pole; and a microwave radiation waveguide made of a conductive nonmagnetic material that is disposed in a recording gap, the recording gap being a gap between the main pole and the shielded pole. The main pole magnetic layer and the shielded magnetic layer have an intermediate connection part that connects the layers at a depth-side, and an electrical insulation magnetic film is disposed in the intermediate connection part, and the main pole and the shielded pole are electrically connected with the microwave radiation waveguide that is disposed in the recording gap, which is the gap between the main pole and the shielded pole so that a simple configuration, with a relatively easy and efficient manufacturing process, is realized that overlaps AC magnetic fields in an in-plane direction of a microwave band, which is the same as, or close to, a ferromagnetic resonant frequency of a medium recording layer.
    • 微波辅助磁头形成为包括主极的主极磁性层; 包括屏蔽极的屏蔽磁性层; 形成为从主极的尖端产生书写磁场的记录线圈; 以及设置在记录间隙中的由导电非磁性材料制成的微波辐射波导,记录间隙是主极和屏蔽极之间的间隙。 主极磁性层和屏蔽磁性层具有在深度侧连接层的中间连接部,并且在中间连接部中设置电绝缘性的磁性膜,并且主极和屏蔽极电气连接 利用布置在作为主极和屏蔽极之间的间隙的记录间隙中的微波辐射波导,从而实现了具有相对简单和有效的制造工艺的简单配置,其与交流磁场重叠, 与介质记录层的铁磁谐振频率相同或接近的微波频带的平面方向。