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    • 19. 发明申请
    • Method of manufacturing magnetic head for perpendicular magnetic recording
    • 用于垂直磁记录的磁头制造方法
    • US20090294402A1
    • 2009-12-03
    • 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。
    • 20. 发明申请
    • Thin film magnetic head and manufacturing method thereof
    • 薄膜磁头及其制造方法
    • US20050128639A1
    • 2005-06-16
    • US10682732
    • 2003-10-10
    • Yoshitaka SasakiTakehiro KamigawaHiroyuki ItohKazuo IshizakiShigeki TanemuraHironori Araki
    • Yoshitaka SasakiTakehiro KamigawaHiroyuki ItohKazuo IshizakiShigeki TanemuraHironori Araki
    • G11B5/147G11B5/39
    • G11B5/3903
    • The invention is directed to improvement of a write element of a thin film magnetic head. In said write element, a first coil and a second coil are provided on a first insulating film formed on one surface of a first magnetic film and surround in a spiral form a back gap portion. A second yoke portion in the upper position comprises a wide portion, a narrow portion and a sloping flare portion. The wide portion has a flat surface and is connected to the first magnetic film by a back gap portion at the rear of the medium-facing surface. The narrow portion forms the second pole portion and the surface of the narrow portion being at a lower position than the surface of the wide portion. The sloping flare portion extends from the narrow portion to the wide portion, gradually increasing in width and its surface sloping upward away from the surface of the narrow portion to the surface of the wide portion.
    • 本发明旨在改进薄膜磁头的写入元件。 在所述写入元件中,第一线圈和第二线圈设置在形成在第一磁性膜的一个表面上的第一绝缘膜上,并以螺旋形式包围在后部间隙部分中。 在上部位置的第二轭部包括宽部分,窄部分和倾斜的张开部分。 宽部分具有平坦的表面,并且通过位于介质表面的后部的后间隙部分连接到第一磁性膜。 窄部分形成第二极部分,并且窄部分的表面处于比宽部分的表面更低的位置。 倾斜的喇叭口部分从窄部分延伸到宽部分,宽度逐渐增加,并且其表面向上倾斜远离窄部分的表面到宽部分的表面。