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    • 10. 发明授权
    • Recording heads using magnetic fields generated locally from high current densities in a thin film wire
    • 使用在薄膜线中从高电流密度局部产生的磁场来记录磁头
    • US06665136B2
    • 2003-12-16
    • US10084033
    • 2002-02-27
    • Thomas William ClintonMichael Allen SeiglerRobert Earl Rottmayer
    • Thomas William ClintonMichael Allen SeiglerRobert Earl Rottmayer
    • G11B502
    • B82Y10/00G11B5/127G11B5/1278G11B5/17G11B5/313G11B5/743G11B13/045G11B2005/0002G11B2005/0005G11B2005/0021Y10T428/1186
    • A method of recording information bits in a magnetic storage medium, the method comprising positioning a first conductor adjacent to a magnetic recording medium, the conductor having a width and a length, wherein a distance between the first conductor and the magnetic recording medium is less than or equal to the width and the length, and passing a first current through the conductor of sufficient magnitude to produce a magnetic field in the magnetic medium greater than one Tesla and having a magnetic field gradient in a cross track direction and a down track direction greater than 100 Oe/nm over a bit dimension. The thickness of the first conductor can be less than or equal to the distance between the first conductor and the magnetic recording medium. The current density in the conductor can be greater than 109 ampere/cm2, and the length of the conductor can be less than 100 nm. The current can be applied as one or more pulses in a predetermined clock cycle time. The magnetic field can be augmented by using an additional conductor, an adjacent ferromagnetic film, and/or a magnetic yoke and coil. Magnetic recording heads and disc drives that record data in accordance with the method are also included.
    • 一种在磁存储介质中记录信息位的方法,所述方法包括将邻近磁记录介质的第一导体定位,所述导体具有宽度和长度,其中第一导体和磁记录介质之间的距离小于 或等于宽度和长度,并且使足够数量的第一电流通过导体,以在磁介质中产生大于一特斯拉的磁场,并且在交叉磁道方向和向下磁道方向上具有更大的磁场梯度 超过100 Oe / nm。 第一导体的厚度可以小于或等于第一导体和磁记录介质之间的距离。 导体中的电流密度可以大于10 9安培/厘米2,导体的长度可以小于100纳米。 电流可以作为一个或多个脉冲施加在预定的时钟周期中。 可以通过使用附加的导体,相邻的铁磁膜和/或磁轭和线圈来增加磁场。 还包括根据该方法记录数据的磁记录头和磁盘驱动器。