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    • 58. 发明授权
    • Magnetic head having angled pole portions
    • 磁头具有倾斜的极部
    • US07916425B2
    • 2011-03-29
    • US11812757
    • 2007-06-21
    • Yoshitaka SasakiHiroyuki ItohHironori ArakiShigeki TanemuraKazuo IshizakiLijie GuanTakehiro Horinaka
    • Yoshitaka SasakiHiroyuki ItohHironori ArakiShigeki TanemuraKazuo IshizakiLijie GuanTakehiro Horinaka
    • G11B5/127
    • G11B5/3116G11B5/1278
    • A magnetic head includes: a pole layer; a nonmagnetic layer disposed on part of the top surface of the pole layer; a gap layer disposed on the pole layer and the nonmagnetic layer; and a shield disposed on the gap layer. The top surface of the pole layer includes: a first portion having a first edge located in a medium facing surface and a second edge opposite thereto; and a second portion located farther from the medium facing surface than the first portion and connected to the first portion at the second edge. The first portion is inclined with respect to a direction orthogonal to the medium facing surface so that the distance from a substrate increases with increasing distance from the medium facing surface. The nonmagnetic layer has a bottom surface touching the second portion, and this bottom surface has an edge located at the second edge.
    • 磁头包括:极层; 设置在所述极层的顶表面的一部分上的非磁性层; 设置在所述极层和所述非磁性层上的间隙层; 以及设置在间隙层上的屏蔽件。 极层的顶表面包括:第一部分,其具有位于介质相对表面中的第一边缘和与其相对的第二边缘; 以及位于比所述第一部分更远离所述介质面对表面并且在所述第二边缘处连接到所述第一部分的第二部分。 第一部分相对于与介质相对表面正交的方向倾斜,使得距衬底的距离随着距离介质面向表面的距离的增加而增加。 非磁性层具有接触第二部分的底面,该底面具有位于第二边缘的边缘。
    • 59. 发明授权
    • Method of manufacturing magnetic head for perpendicular magnetic recording
    • 用于垂直磁记录的磁头制造方法
    • US07910011B2
    • 2011-03-22
    • US12153987
    • 2008-05-28
    • Hironori ArakiYoshitaka SasakiHiroyuki ItohShigeki TanemuraKazuo Ishizaki
    • Hironori ArakiYoshitaka SasakiHiroyuki ItohShigeki TanemuraKazuo Ishizaki
    • B44C1/22
    • G11B5/3116G11B5/1278G11B5/3163
    • A magnetic head includes: a pole layer including a track width defining portion and a wide portion; and an encasing layer disposed on a bottom forming layer and having a groove that accommodates the pole layer. The groove includes a first portion for accommodating at least part of the track width defining portion, and a second portion for accommodating at least part of the wide portion. A manufacturing method for the magnetic head includes: the step of etching a nonmagnetic layer that will become the encasing layer later, such that an initial groove including the first portion is formed in the nonmagnetic layer; the step of forming an initial groove mask covering the first portion; and a second etching step for etching the nonmagnetic layer so as to complete the groove. When the second etching step starts, a portion of the top surface of the bottom forming layer located in a region in which the second portion is to be formed is covered with the nonmagnetic layer or the initial groove mask.
    • 磁头包括:包括轨道宽度限定部分和宽部分的极层; 以及设置在底部形成层上并具有容纳极层的槽的封装层。 凹槽包括用于容纳轨道宽度限定部分的至少一部分的第一部分和用于容纳至少部分宽部分的第二部分。 磁头的制造方法包括以下步骤:在非磁性层中形成包含第一部分的初始槽,从而蚀刻将成为封装层的非磁性层; 形成覆盖所述第一部分的初始槽掩模的步骤; 以及用于蚀刻非磁性层以完成凹槽的第二蚀刻步骤。 当第二蚀刻步骤开始时,位于要形成第二部分的区域中的底部形成层的顶表面的一部分被非磁性层或初始凹槽掩模覆盖。