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    Magnetic recording head and method for manufacturing
    1.
    发明授权
    Magnetic recording head and method for manufacturing 失效
    磁记录头及制造方法

    公开(公告)号：US07333301B2

    公开(公告)日：2008-02-19

    申请号：US10650832

    申请日：2003-08-29

    申请人： Kimitoshi Etoh ,  Nobuo Yoshida ,  Moriaki Fuyama ,  Makoto Morijiri ,  Kenichi Meguro ,  Ichiro Oodake ,  Kazue Kudo ,  Yohji Maruyama ,  Katsuro Watanabe

    发明人： Kimitoshi Etoh ,  Nobuo Yoshida ,  Moriaki Fuyama ,  Makoto Morijiri ,  Kenichi Meguro ,  Ichiro Oodake ,  Kazue Kudo ,  Yohji Maruyama ,  Katsuro Watanabe

    IPC分类号： G11B5/127

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3136 ,  G11B5/3909 ,  G11B5/3912 ,  Y10T29/49044

    摘要： A thin-film magnetic head having little temperature rise in the element, good heat dissipation and a short magnetic path length (narrow coil pitch) and manufacturing method for same is provided. To form the coil of the thin-film magnetic head, a lower coil is first formed and after forming alumina and an inorganic compound containing alumina, a trench is formed for the upper coil by reactive ion etching. The lower coil allows uniform etching at this time and functions as a film to prevent loading effects occurring during reactive ion etching. This trench is then plated in copper and chemical mechanical planarization performed to form the upper layer coil as the dual-layer coil of the present invention. Heat from the coil is efficiently radiated towards the substrate by alumina and an inorganic compound containing alumina with good heat propagation. The ratio of alumina or inorganic compound containing alumina in the lower coil can be selected by reactive ion etching so that an upper coil trench functioning as an etching stopper can be securely formed to allow forming a stable coil film thickness and a short magnetic path length.

    摘要翻译： 提供元件温度上升较小，散热好，磁路长度短（窄线圈间距）及其制造方法的薄膜磁头。 为了形成薄膜磁头的线圈，首先形成下线圈，在形成氧化铝和含有氧化铝的无机化合物之后，通过反应离子蚀刻形成用于上部线圈的沟槽。 此时，下线圈允许均匀刻蚀，起到膜的作用，以防止在反应离子蚀刻期间发生的负载效应。 然后将该沟槽镀铜并进行化学机械平面化以形成上层线圈作为本发明的双层线圈。 来自线圈的热量通过氧化铝和含有良好热传播的氧化铝的无机化合物有效地朝向基板辐射。 可以通过反应离子蚀刻来选择下层线圈中的氧化铝或含有氧化铝的无机化合物的比例，从而可以可靠地形成用作蚀刻停止层的上部线圈沟槽，以形成稳定的线圈膜厚度和短的磁路长度。

    Thin film magnetic head and magnetic storage apparatus
    3.
    发明授权
    Thin film magnetic head and magnetic storage apparatus 失效
    薄膜磁头和磁存储装置

    公开(公告)号：US06795272B2

    公开(公告)日：2004-09-21

    申请号：US10217451

    申请日：2002-08-14

    申请人： Kazue Kudo ,  Yasuyuki Okada ,  Moriaki Fuyama ,  Yohji Maruyama ,  Gen Oikawa

    发明人： Kazue Kudo ,  Yasuyuki Okada ,  Moriaki Fuyama ,  Yohji Maruyama ,  Gen Oikawa

    IPC分类号： G11B547

    CPC分类号： G11B5/313 ,  G11B5/3109 ,  G11B5/3146 ,  G11B5/3163 ,  Y10T29/49032

    摘要： A thin film magnetic head includes a lower magnetic pole, an upper magnetic pole provided so as to face the lower magnetic pole, and a magnetic gap layer provided between the lower magnetic pole and the upper magnetic pole. The upper magnetic pole constitutes a first magnetic layer formed on a side facing the magnetic gap layer by means of sputtering and a second magnetic layer formed on the first magnetic layer by means of plating, in which the saturation magnetic flux density of the first magnetic layer is set higher than that of the second magnetic layer. The thin film magnetic head composed as above is capable of generating a stronger magnetic field owing to its stably-formed magnetic core, thereby recording on a high-coercivity medium and high-density recording are made possible.

    摘要翻译： 薄膜磁头包括下磁极，设置成面对下磁极的上磁极和设置在下磁极和上磁极之间的磁隙层。 上磁极构成通过溅射形成在面对磁隙层的一侧的第一磁性层，以及通过电镀形成在第一磁性层上的第二磁性层，其中第一磁性层的饱和磁通密度 被设定为高于第二磁性层的高度。 如上构成的薄膜磁头由于其稳定形成的磁芯而能够产生更强的磁场，从而在高矫顽力介质上进行记录和高密度记录。

    Magnetic head having write pole, first soft magnetic films separately disposed on both sides of the main pole, and a second soft magnetic film disposed on a trailing side of the main pole
    4.
    发明授权
    Magnetic head having write pole, first soft magnetic films separately disposed on both sides of the main pole, and a second soft magnetic film disposed on a trailing side of the main pole 有权
    具有写极的磁头，分别设置在主极两侧的第一软磁膜和设置在主极的后侧的第二软磁膜

    公开(公告)号：US08300358B2

    公开(公告)日：2012-10-30

    申请号：US12070155

    申请日：2008-02-15

    申请人： Yohji Maruyama ,  Tadayuki Iwakura ,  Kimitoshi Etoh ,  Hiromi Shiina ,  Kazue Kudo

    发明人： Yohji Maruyama ,  Tadayuki Iwakura ,  Kimitoshi Etoh ,  Hiromi Shiina ,  Kazue Kudo

    IPC分类号： G11B5/127

    CPC分类号： G11B5/1278 ,  G11B5/112 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163

    摘要： Embodiments of the present invention help to suppress broadening of a write field of a main pole of a perpendicular recording head and realize high-quality write operation. According to one embodiment, a main pole of a write head extends to an air bearing surface or a medium-facing surface and has an inverted trapezoid in cross-section. First soft magnetic films called side shields are separately disposed through a nonmagnetic film on both sides of the main pole. The air bearing surface side end of the first soft magnetic film is provided to recede from the air bearing surface. The first soft magnetic film and the main pole are formed in the same layer. A second soft magnetic film called a trailing shield is provided above the main pole on the air bearing surface side via a nonmagnetic film.

    摘要翻译： 本发明的实施例有助于抑制垂直记录头的主极的写入场的扩展，并且实现高质量的写入操作。 根据一个实施例，写入头的主极延伸到空气轴承表面或中等的表面，并且具有横截面的倒梯形。 称为侧屏的第一软磁膜通过主极两侧的非磁性膜分开设置。 第一软磁性膜的空气轴承面侧端设置为从空气轴承面退回。 第一软磁膜和主极形成在同一层中。 被称为后挡板的第二软磁膜通过非磁性膜设置在空气支承面侧的主极上方。

    Magnetic head with a magnetic pole sandwiched between conductive materials
    7.
    发明授权
    Magnetic head with a magnetic pole sandwiched between conductive materials 失效
    磁头与磁极夹在导电材料之间

    公开(公告)号：US6104574A

    公开(公告)日：2000-08-15

    申请号：US11838

    申请日：1998-02-20

    申请人： Hisashi Takano ,  Yohji Maruyama ,  Makoto Aihara ,  Takashi Kawabe ,  Moriaki Fuyama

    发明人： Hisashi Takano ,  Yohji Maruyama ,  Makoto Aihara ,  Takashi Kawabe ,  Moriaki Fuyama

    IPC分类号： G11B5/187 ,  G11B5/31 ,  G11B5/39 ,  G11B5/455

    CPC分类号： G11B5/3967 ,  G11B5/187 ,  G11B5/312 ,  G11B5/3143 ,  G11B5/3109 ,  G11B5/3163 ,  G11B5/455

    摘要： A leaking magnetic flux from a taper portion is canceled by utilizing an eddy current loss by using a magnetic head having a structure wherein at least a part of a magnetic pole constituting a magnetic path through a recording gap is sandwiched by conductive materials with respect to a track width direction, and a write blur quantity can be thus reduced. Further, magnetic saturation can be prevented by limiting a volume decrease at the distal end portion of the magnetic pole when the track width is reduced. Accordingly, the present invention can prevent magnetic saturation of the distal end portion of the magnetic pole resulting from the reduction of the width of the track of the recording head, can accomplish narrow-track recording by the recording head to a recording medium having high-coercive force and can reduce write blur. Further, the present invention can provide a narrow-track magnetic head capable of accomplishing a high-speed transfer, large-capacity magnetic recording system, and a magnetic memory apparatus using this magnetic head.

    摘要翻译： PCT No.PCT / JP95 / 01667 Sec。 371日期：1998年2月20日 102（e）1998年2月20日PCT PCT 1995年8月23日PCT公布。 公开号WO97 / 08687 日期1997年3月6日通过使用具有以下结构的磁头利用涡流损耗来消除来自锥形部分的泄漏磁通，其中构成通过记录间隙的磁路的至少一部分磁极被夹持导电 可以减少相对于轨道宽度方向的材料和写入模糊量。 此外，当磁道宽度减小时，通过限制磁极的远端部分的体积减小可以防止磁饱和。 因此，本发明可以防止由于记录头的轨道的宽度的减小导致的磁极的远端部分的磁饱和，可以通过记录头实现到具有高记录头的记录介质的窄轨记录， 矫顽力可以减少书写模糊。 此外，本发明可以提供一种能够实现高速传输，大容量磁记录系统的磁道磁头和使用该磁头的磁存储装置。

    Thin film magnetic recording head with very narrow track width performing high density recording at high driving frequency
    8.
    发明授权
    Thin film magnetic recording head with very narrow track width performing high density recording at high driving frequency 失效
    具有非常窄轨道宽度的薄膜磁记录头在高驱动频率下执行高密度记录

    公开(公告)号：US06091582A

    公开(公告)日：2000-07-18

    申请号：US48985

    申请日：1998-03-27

    申请人： Matahiro Komuro ,  Tomohiro Okada ,  Moriaki Fuyama ,  Tetsuo Ito ,  Hiroshi Fukui ,  Yohji Maruyama ,  Miki Hara ,  Hisashi Takano

    发明人： Matahiro Komuro ,  Tomohiro Okada ,  Moriaki Fuyama ,  Tetsuo Ito ,  Hiroshi Fukui ,  Yohji Maruyama ,  Miki Hara ,  Hisashi Takano

    IPC分类号： G11B5/012 ,  G11B5/31 ,  G11B5/39 ,  G11B5/147 ,  G11B5/23

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/3109 ,  G11B5/313 ,  G11B5/3143 ,  G11B5/3967 ,  G11B2005/3996 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/4906

    摘要： A thin film magnetic head is providing for recording with less blur having a high recording magnetic field, for use in a recording/reproduction separation type magnetic head and a magnetic recording/reproducing apparatus. The thin film magnetic head, in which a gap film of a recording head and a magnetic film in contact with the gap film have the same track width, includes an upper magnetic film of the recording head and an upper shield film of a magnetic resistive film, each having a width wider than the track width, and a cross section parallel to the air bearing surface of the upper magnetic film is reduced at a position less than a gap depth from the air bearing surface. The thin film magnetic head has a coil conductor sandwiched by a first magnetic film and a fourth magnetic film, a second magnetic body magnetically connected to the first magnetic film, a third magnetic body magnetically connected to the fourth magnetic film, and a magnetic gap sandwiched by the second and third magnetic films, in which an insulating and non-magnetic single film in contact with the second and third magnetic films covers at least the first magnetic film.

    摘要翻译： 薄膜磁头提供用于具有高记录磁场的较少模糊的记录，用于记录/再现分离型磁头和磁记录/再现装置。 其中记录头的间隙膜和与间隙膜接触的磁性膜具有相同的轨道宽度的薄膜磁头包括记录头的上部磁性膜和磁性电阻膜的上部屏蔽膜 各自具有比轨道宽度宽的宽度，并且平行于上部磁性膜的空气支承表面的横截面在比空气轴承表面小于间隙深度的位置处减小。 薄膜磁头具有由第一磁性膜和第四磁性膜夹持的线圈导体，与第一磁性膜磁性连接的第二磁性体，与第四磁性膜磁性连接的第三磁性体和夹在 通过第二和第三磁性膜，其中与第二和第三磁性膜接触的绝缘和非磁性单膜至少覆盖第一磁性膜。

    Perpendicular magnetic recording head and method for manufacturing the same
    9.
    发明授权
    Perpendicular magnetic recording head and method for manufacturing the same 有权
    垂直磁记录头及其制造方法

    公开(公告)号：US08064161B2

    公开(公告)日：2011-11-22

    申请号：US12231246

    申请日：2008-08-28

    申请人： Kazue Kudo ,  Hiromi Shiina ,  Gen Oikawa ,  Yohji Maruyama ,  Noriyuki Saiki

    发明人： Kazue Kudo ,  Hiromi Shiina ,  Gen Oikawa ,  Yohji Maruyama ,  Noriyuki Saiki

    IPC分类号： H04R31/00 ,  G11B5/147

    CPC分类号： G11B5/3146 ,  G11B5/1278 ,  G11B5/315 ,  G11B5/3163 ,  Y10T29/49044 ,  Y10T29/4906

    摘要： Embodiments of the present invention help to provide a perpendicular magnetic recording head capable of writing a signal in a track having a small width. According to one embodiment, a perpendicular magnetic recording head includes an auxiliary pole, a main pole, a yoke, a coil, a first soft magnetic film and a second soft magnetic film. The yoke is in contact with the main pole. The coil is wound around a magnetic circuit composed of the auxiliary and main poles and the yoke. The first soft magnetic film is provided on both sides of the main pole with a non-magnetic film provided between the first soft magnetic film and the main pole. The second soft magnetic film is provided on the trailing side of the main pole with the non-magnetic film provided between the second soft magnetic film and the main pole. The first and second soft magnetic films are two types of plated magnetic films. One type of the plated magnetic films have respective thicknesses of 0.5 nm to 20 nm and respective body centered cubic lattice crystal structures. The other types of the plated magnetic films have respective thicknesses of 0.5 nm to 20 nm and respective face centered cubic lattice crystal structures. The two types of the plated magnetic films are alternately laminated with four or more layers. This can achieve the magnetic disk drive capable of reducing a possibility to erroneously delete a signal after the signal being written and preventing degradation of characteristics of a high frequency signal.

    摘要翻译： 本发明的实施例有助于提供一种能够在具有小宽度的轨迹中写入信号的垂直磁记录头。 根据一个实施例，垂直磁记录头包括辅助极，主极，磁轭，线圈，第一软磁膜和第二软磁膜。 轭与主极接触。 线圈缠绕在由辅助和主极和轭构成的磁路上。 第一软磁膜设置在主极的两侧，设置在第一软磁膜和主极之间的非磁性膜。 第二软磁膜设置在主极的后侧，设置在第二软磁膜和主极之间的非磁性膜。 第一和第二软磁膜是两种类型的镀覆磁性膜。 一种类型的电镀磁性膜具有0.5nm至20nm的各自的厚度和相应的体心立方晶格结构。 其他类型的镀膜磁性膜具有0.5nm至20nm的各自的厚度和各自的面心立方晶格结构。 两种类型的镀覆磁性膜交替地层压有四层或更多层。 这可以实现能够降低信号被写入之后错误地删除信号的可能性的磁盘驱动器，并且防止高频信号的特性的劣化。

    Magnetic film, manufacturing method thereof and thin film magnetic head
    10.
    发明申请
    Magnetic film, manufacturing method thereof and thin film magnetic head 有权
    磁膜，其制造方法和薄膜磁头

    公开(公告)号：US20080075977A1

    公开(公告)日：2008-03-27

    申请号：US11820598

    申请日：2007-06-19

    申请人： Kazue Kudo ,  Gen Oikawa ,  Yohji Maruyama ,  Noriyuki Saiki ,  Hiromi Shiina

    发明人： Kazue Kudo ,  Gen Oikawa ,  Yohji Maruyama ,  Noriyuki Saiki ,  Hiromi Shiina

    IPC分类号： G11B5/33 ,  H04R31/00

    CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/147 ,  G11B5/313 ,  Y10T29/49032 ,  Y10T428/115

    摘要： Embodiments of the present invention provide a magnetic disk drive capable of allowing higher data transfer rates and higher recording densities. According to one embodiment, an upper magnetic core and lower magnetic core comprise a multi-layered magnetic film formed by alternately stacking a face-centered cubic (fcc) crystalline magnetic thin layer and a body-centered cubic (bcc) crystalline magnetic thin layer by plating. The plating bath is such that the temperature is about 30±1° C., pH is about 2.0−1.0 to 2.0+0.5, metal ion concentrations are about 5 to 25 (g/l) for Ni2+ and 5 to 15 (g/l) for Fe2+, saccharin sodium concentration is about 1.5±1.0 (g/l), sodium chloride concentration is about 25±5 (g/l), and boric acid concentration is about 25±5 (g/l). Since each layer's crystal structure is different from that of its adjacent lower layer, epitaxial growth is broken within each layer. Thus, since crystal grains are reduced in size, it is possible to lessen the decrease of the permeability μ at higher frequencies.

    摘要翻译： 本发明的实施例提供一种能够允许更高数据传输速率和更高记录密度的磁盘驱动器。 根据一个实施例，上磁芯和下磁芯包括通过交替地将面心立方（fcc）晶体磁性薄层和体心立方（bcc）结晶磁性薄层交替堆叠而形成的多层磁性膜， 电镀。 电镀浴温度为约30±1℃，pH为约2.0-1.0至2.0 + 0.5，Ni2 +和5至15（g / l）的金属离子浓度为约5至25（g / l） l）对于Fe2 +，糖精钠浓度约为1.5±1.0（g / l），氯化钠浓度约为25±5（g / l），硼酸浓度约为25±5（g / l）。 由于每个层的晶体结构与其相邻的下层的晶体结构不同，所以在每个层内外延生长被破坏。 因此，由于晶粒尺寸减小，因此能够降低高频率下的磁导率μμ的降低。