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    Magnetic head with shield layer having discontinuous multi-layer or mixed layer and magnetic recording apparatus utilizing the magnetic head
    5.
    发明授权
    Magnetic head with shield layer having discontinuous multi-layer or mixed layer and magnetic recording apparatus utilizing the magnetic head 失效
    具有具有不连续的多层或混合层的屏蔽层的磁头和利用磁头的磁记录装置

    公开(公告)号：US06456466B1

    公开(公告)日：2002-09-24

    申请号：US09531466

    申请日：2000-03-20

    申请人： Kazuhiro Nakamoto ,  Hiroyuki Hoshiya ,  Takashi Kawabe ,  Hiromasa Takahashi ,  Hisashi Kimura ,  Katsuro Watanabe ,  Chiaki Ishikawa ,  Kaori Totsuka

    发明人： Kazuhiro Nakamoto ,  Hiroyuki Hoshiya ,  Takashi Kawabe ,  Hiromasa Takahashi ,  Hisashi Kimura ,  Katsuro Watanabe ,  Chiaki Ishikawa ,  Kaori Totsuka

    IPC分类号： G11B5127

    CPC分类号： G11B5/3903 ,  G11B5/40

    摘要： The present invention is to realize a magnetic recording and reproducing apparatus in which even if a spacing between shields of a magnetic head is narrowed, a deterioration in characteristic caused by a short-circuiting between a magnetoresistive layer and a magnetic shield layer is prevented to provide a high recording density. The present invention comprises an upper shield layer 15, a lower shield layer 13,and a magnetoresistive layer 14 arranged therebetween. Further, there is provided a constitution in which one or both shield layers has (have) a high resistance layer comprising a mixed layer of ferromagnetic metal and an insulating material, or a discontinuous multi-layer having a plurality of ferromagnetic metal layers and a plurality of insulating material layers laminated alternately, to prevent a deterioration in characteristic caused by a short-circuiting.

    摘要翻译： 本发明是为了实现磁记录和重放装置，其中即使磁头的屏蔽之间的间隔变窄，防止了由磁阻层和磁屏蔽层之间的短路引起的特性劣化，从而提供 高记录密度。 本发明包括上屏蔽层15，下屏蔽层13和布置在其间的磁阻层14。 此外，提供一种或两个屏蔽层具有包含强磁性金属和绝缘材料的混合层的高电阻层或具有多个强磁性金属层和多个绝缘材料的不连续多层的结构 的交替层叠的绝缘材料层，以防止由短路导致的特性劣化。

    Magnetic head with electro lapping guide
    7.
    发明授权
    Magnetic head with electro lapping guide 失效
    磁头与电动研磨导轨

    公开(公告)号：US08351162B2

    公开(公告)日：2013-01-08

    申请号：US11192532

    申请日：2005-07-29

    申请人： Kimitoshi Etoh ,  Hisashi Kimura ,  Isao Nunokawa ,  Tomohiro Okada

    发明人： Kimitoshi Etoh ,  Hisashi Kimura ,  Isao Nunokawa ,  Tomohiro Okada

    IPC分类号： G11B5/33 ,  G11B5/147

    CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/3163 ,  G11B5/3169 ,  G11B5/3173 ,  G11B5/3967 ,  Y10T29/49041

    摘要： Embodiments of the invention reduce the throat height of a single pole type head with high accuracy. In one embodiment, a head with an electro lapping guide for controlling a write head's throat height during air bearing surface processing is made. Air bearing surface processing is performed using the electro lapping guide. For a read head, processing is performed using the read head itself or an electro lapping guide for the read head so that both the throat height of write head and the element height of read head are controlled.

    摘要翻译： 本发明的实施例以高精度降低单极型头部的喉部高度。 在一个实施例中，制造具有用于在空气轴承表面处理期间控制写头的喉部高度的电研磨引导件的头部。 使用电动研磨导轨执行空气轴承表面处理。 对于读头，使用读头本身或读头的电研磨引导件进行处理，以便控制写头的喉部高度和读头的元件高度。

    Method for manufacturing perpendicular magnetic recording head
    8.
    发明授权
    Method for manufacturing perpendicular magnetic recording head 有权
    制造垂直磁记录头的方法

    公开(公告)号：US08137571B2

    公开(公告)日：2012-03-20

    申请号：US12381972

    申请日：2009-03-17

    申请人： Tomohiro Okada ,  Hisashi Kimura ,  Taku Shintani ,  Tadashi Umezawa

    发明人： Tomohiro Okada ,  Hisashi Kimura ,  Taku Shintani ,  Tadashi Umezawa

    IPC分类号： B44C1/22

    CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3163

    摘要： Embodiments of the present invention help to provide a method for manufacturing a perpendicular magnetic recording head including a main magnetic pole having a width that does not generally vary. According to one embodiment, a magnetic film, a first inorganic mask film, an organic film, a second inorganic mask film, and a resist pattern are formed in this order. Reactive ion etching (RIE) is performed using the resist pattern as a mask to etch the second inorganic mask film and the organic film and form a mask for the subsequent step. A flow rate of an Ar gas is then controlled, and ion milling is performed, to correct a difference between the width of the mask located at the central portion of the wafer and the width of the mask located at the outer peripheral portion of the wafer. The magnetic film is processed to have a uniform track width. Ion milling is then performed to form the main magnetic pole having an inverted trapezoidal shape.

    摘要翻译： 本发明的实施例有助于提供一种用于制造垂直磁记录头的方法，所述垂直磁记录头包括具有通常不变化的宽度的主磁极。 根据一个实施例，依次形成磁性膜，第一无机掩模膜，有机膜，第二无机掩模膜和抗蚀剂图案。 使用抗蚀剂图案作为掩模进行反应离子蚀刻（RIE），以蚀刻第二无机掩模膜和有机膜并形成用于后续步骤的掩模。 然后控制Ar气体的流量，进行离子铣削，以校正位于晶片中心部分的掩模的宽度与位于晶片外周部分的掩模的宽度之间的差异 。 磁膜被处理成具有均匀的轨迹宽度。 然后进行离子铣削以形成具有倒梯形形状的主磁极。

    Method of manufacturing a magnetic head
    10.
    发明授权
    Method of manufacturing a magnetic head 有权
    制造磁头的方法

    公开(公告)号：US07716812B2

    公开(公告)日：2010-05-18

    申请号：US11408429

    申请日：2006-04-20

    申请人： Atsushi Kato ,  Norihiro Ookawa ,  Hisashi Kimura

    发明人： Atsushi Kato ,  Norihiro Ookawa ,  Hisashi Kimura

    IPC分类号： G11B5/187

    CPC分类号： G11B5/3163 ,  G11B5/1278 ,  G11B5/3116 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49046 ,  Y10T29/4906

    摘要： A main magnetic pole of a recording head is formed in an inverted trapezoidal shape by ion milling but, the long milling time poses a problem of variations in the inverted trapezoidal shape and the dimensional variations in track width. In one embodiment of the invention, a recording head is formed by first forming a lower magnetic pole, a gap layer, and conductor coils, forming an upper magnetic yoke over the gap layer at a position recessed from the air bearing surface, and forming an inorganic insulative layer in the recessed portion. A back magnetic pole connected with the upper magnetic yoke is formed on the back of the lower electrode. Successively, the upper surfaces of the inorganic insulative layer and the upper magnetic yoke are planarized, on which an underlayer film such as of Rh is formed. A magnetic layer is formed by stacking a plurality of thin magnetic films by sputtering over the underlayer film from the air bearing surface as far as the position overlapping the upper magnetic yoke. Successively, ion milling is applied to form a main magnetic pole of an inverted trapezoidal shape having a taper on the lateral surface as viewed from the air bearing surface.

    摘要翻译： 记录头的主磁极通过离子铣削形成倒梯形形状，但是长铣削时间带来了倒梯形形状的变化和轨道宽度的尺寸变化的问题。 在本发明的一个实施例中，通过首先形成下磁极，间隙层和导体线圈形成记录头，在空隙支承表面凹陷的位置上在间隙层上形成上磁轭，并形成 无机绝缘层。 与上磁轭连接的后磁极形成在下电极的背面。 接着，无机绝缘层和上磁轭的上表面被平坦化，在其上形成诸如Rh的下层膜。 通过从空气轴承表面溅射下层膜而形成多个薄磁性膜，只要与上磁轭重叠的位置即可形成磁性层。 接着，从空气轴承表面观察，施加离子铣削以形成具有在侧面上的锥形的倒梯形形状的主磁极。