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    • 76. 发明授权
    • Perpendicular recording magnetic head with a write shield megnetically coupled to a first pole piece
    • 带有写屏蔽的垂直记录磁头与第一极片巨大耦合
    • US07388732B2
    • 2008-06-17
    • US10814716
    • 2004-03-31
    • Quang Le
    • Quang Le
    • G11B5/147
    • G11B5/127G11B5/1278G11B5/31G11B5/3153G11B5/3176G11B5/33
    • A perpendicular recording write head has ferromagnetic first and second pole pieces which are connected at a back gap and an insulation stack with a write coil layer embedded therein is located between the first and second pole pieces and between a head surface of the write head and the back gap. The second pole piece has a pole tip, which is located at the head surface and a recessed ferromagnetic write shield layer. A nonmagnetic isolation layer is located between the second pole piece and the write shield layer and at least one ferromagnetic stud is magnetically connected between the first pole piece layer and the write shield layer and is located between the head surface and the insulation stack. The write pole formation is performed using ion milling.
    • 垂直记录写头具有在后隙连接的铁磁第一和第二极片,并且其中嵌有写入线圈层的绝缘堆叠位于第一和第二极靴之间以及写头的头表面和 背隙。 第二极片具有位于头表面的磁极尖端和凹陷的铁磁写入屏蔽层。 非磁性隔离层位于第二极靴和写入屏蔽层之间,并且至少一个铁磁螺柱磁性地连接在第一极靴层和写入屏蔽层之间,并位于头部表面和绝缘堆叠之间。 使用离子铣削来执行写入极的形成。
    • 77. 发明申请
    • Magnetic transducer with milling mask
    • 具有铣削面罩的磁性换能器
    • US20070139816A1
    • 2007-06-21
    • US11707524
    • 2007-02-12
    • Tsung ChenDavid DruistQuang LeKim LeeChun-Ming WangHoward Zolla
    • Tsung ChenDavid DruistQuang LeKim LeeChun-Ming WangHoward Zolla
    • B44C1/22G11B5/127
    • G11B5/3163G11B5/1278G11B5/3116Y10T29/49032
    • A method for fabricating a magnetic head with a trapezoidal shaped pole piece tip is described. The body of the main pole piece is deposited; then one or more layers for the pole piece tip are deposited. A bed material is deposited over the pole piece tip material. A void is formed in the bed material over the area for the pole piece tip. The void is filled with an ion-milling resistant material such as alumina preferably using atomic layer deposition or atomic layer chemical vapor deposition. The excess ion-milling resistant material and the bed material are removed. The result is an ion-milling mask formed over the area for the pole piece tip. Ion milling is then used to remove the unmasked material in the pole piece tip layer and to form a beveled pole piece tip and preferably a beveled face on the main pole piece.
    • 描述了制造具有梯形极片尖端的磁头的方法。 主极片的主体被沉积; 然后沉积用于极片尖端的一个或多个层。 床材料沉积在极片末端材料上。 在用于极片尖端的区域上的床材料中形成空隙。 空隙填充有耐离子碾磨材料,例如氧化铝,优选使用原子层沉积或原子层化学气相沉积。 除去过量的抗离子碾磨材料和床料。 结果是在极片尖端的区域上形成离子铣削掩模。 然后使用离子铣削去除极片末端层中的未掩模材料,并且在主极片上形成斜面极片末端,并且优选地形成斜面。
    • 78. 发明授权
    • Head for perpendicular recording with a floating trailing shield
    • 头垂直记录与浮动的后盾
    • US07196871B2
    • 2007-03-27
    • US10671639
    • 2003-09-26
    • Yimin HsuQuang LeMason Lamar Williams
    • Yimin HsuQuang LeMason Lamar Williams
    • G11B5/31G11B5/11
    • G11B5/315G11B5/1278G11B5/147G11B5/1871
    • Heads for perpendicular recording using a floating-trailing shield as part of the magnetic circuit for writing magnetic domains in the recording media are described. The floating-trailing shield is separated from the main pole piece by a layer of non-magnetic material along its entire length and the air bearing surface of the floating-trailing shield is substantially larger than that of the main pole piece. The reluctance between the trailing shield and the underlayer in the recording medium is made so low that both are at the same magnetomotive force (or potential), so that no direct connection is needed between the floating-trailing shield and the yoke. When the head is used in a storage system with a magnetic recording medium with a soft underlayer, the floating-trailing shield is, in effect, magnetically shorted to the return pole piece during recording.
    • 描述了使用浮动拖尾屏蔽作为用于在记录介质中写入磁畴的磁路的一部分的垂直记录头。 浮动后挡板沿着其整个长度由非磁性材料层与主极片分开,并且浮动后挡板的空气支承表面基本上大于主极片的空气支承表面。 记录介质中的后屏蔽和底层之间的磁阻被制作得很低以致两者都具有相同的磁动势(或电位),使得在浮动后挡板和轭之间不需要直接连接。 当头部用于具有软底层的磁记录介质的存储系统中时,浮动拖尾屏蔽件实际上在记录期间与返回极片磁性短路。