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    Magnetic slider, head gimbal assembly and method for manufacturing the same
    1.
    发明授权
    Magnetic slider, head gimbal assembly and method for manufacturing the same 有权
    磁性滑块，头万向架组件及其制造方法

    公开(公告)号：US08125734B2

    公开(公告)日：2012-02-28

    申请号：US11899605

    申请日：2007-09-05

    Applicant: Hiroshi Umezaki ,  Seiji Nakagawa ,  Yuhsuke Matsumoto ,  Yoshihisa Takeo ,  Gen Oikawa ,  Hiroshi Kamio

    Inventor： Hiroshi Umezaki ,  Seiji Nakagawa ,  Yuhsuke Matsumoto ,  Yoshihisa Takeo ,  Gen Oikawa ,  Hiroshi Kamio

    IPC: G11B5/60 ,  G11B5/31 ,  G11B15/64

    CPC classification number: G11B5/4853

    Abstract: Embodiments of the present invention provide a magnetic slider of which terminals have a sufficiently large process margin for the laser condition in the SBB process. According to one embodiment, a magnetic slider comprises: a read element and a write element; plural wiring lines which are connected to the read element and the write element; a protective film which covers the read element, the write element and the plural-wiring lines; plural slider pads formed on the protective film; and plural studs which respectively connect the slider pads and the wiring lines and are covered by the protective film, wherein each of the slider pads comprises a chromium film, a nickel iron film and a gold film, the nickel iron film is formed between the chromium film and the gold film, and the chromium film is formed between the nickel iron film and one of the studs and is in contact with the protective film.

    Abstract translation: 本发明的实施例提供了一种磁性滑块，其端子在SBB过程中具有足够大的处理余量用于激光条件。 根据一个实施例，磁性滑块包括：读取元件和写入元件; 连接到读取元件和写入元件的多个布线; 覆盖读取元件，写入元件和多个布线的保护膜; 形成在保护膜上的多个滑块; 以及分别连接滑块和布线并被保护膜覆盖的多个螺柱，其中每个滑块包括铬膜，镍铁膜和金膜，镍铁膜形成在铬 膜和金膜，并且在镍铁膜和其中一个螺柱之间形成铬膜，并与保护膜接触。

    Magnetic thin film head
    2.
    发明申请
    Magnetic thin film head 失效
    磁性薄膜头

    公开(公告)号：US20050208340A1

    公开(公告)日：2005-09-22

    申请号：US11084683

    申请日：2005-03-18

    Applicant: Gen Oikawa ,  Kazue Kudo ,  Youji Maruyama ,  Hiromi Shiina

    Inventor： Gen Oikawa ,  Kazue Kudo ,  Youji Maruyama ,  Hiromi Shiina

    IPC: C25D5/10 ,  B05D5/12 ,  B32B1/00 ,  C22C19/00 ,  C22C38/00 ,  C25D5/16 ,  C25D5/18 ,  C25D5/50 ,  C25D7/00 ,  G11B5/21 ,  G11B5/31 ,  H01F10/16 ,  H01F10/30 ,  H01F41/26

    CPC classification number: B32B15/01 ,  G11B5/21 ,  Y10T428/115 ,  Y10T428/1186

    Abstract: A magnetic film capable of generating strong magnetic fields even in a high frequency region, a manufacturing method therefore and a thin film magnetic head capable of recording even in a high frequency region are provided. In one embodiment, the magnetic film is manufactured by using a 88FeNi film of 200 nm thick having minimum Hk of 0.32 Oe (25.6 A/m) as a main magnetic film and selecting a 20 wt % FeNi film of a similar FeNi alloy plating film having low Hk and low Hc as an interlayer material. A stacked film comprising (88FeNi/20FeNi)×10 layers is prepared so that the total thickness of the main magnetic film is 2 μm. The 88FeNi film is prepared by application of a DC current in a 88FeNi plating bath, and the 20FeNi film is prepared by pulse plating successively in the same bath.

    Abstract translation: 提供了即使在高频区域也能够产生强磁场的磁性膜，因此制造方法和即使在高频区域也能够进行记录的薄膜磁头。 在一个实施例中，通过使用具有最小Hk为0.32Oe（25.6A / m）的200nm厚度的88FeNi膜作为主要磁性膜并选择类似的FeNi合金镀膜的20wt％FeNi膜来制造磁性膜 具有低Hk和低Hc作为中间层材料。 制备包含（88FeNi / 20FeNi）×10层的层叠膜，使得主磁性膜的总厚度为2μm。 通过在88FeNi电镀浴中施加DC电流制备88FeNi膜，并通过在相同的浴中连续脉冲电镀制备20FeNi膜。

    PERPENDICULAR MAGNETIC RECORDING HEAD
    3.
    发明申请
    PERPENDICULAR MAGNETIC RECORDING HEAD 有权
    全能磁记录头

    公开(公告)号：US20100157476A1

    公开(公告)日：2010-06-24

    申请号：US12638911

    申请日：2009-12-15

    Applicant: Kazue Kudo ,  Hiromi Shiina ,  Yohji Maruyama ,  Tetsuya Okai ,  Gen Oikawa ,  Shouji Tokutake

    Inventor： Kazue Kudo ,  Hiromi Shiina ,  Yohji Maruyama ,  Tetsuya Okai ,  Gen Oikawa ,  Shouji Tokutake

    IPC: G11B5/147

    CPC classification number: G11B5/1278 ,  G11B5/3116

    Abstract: A perpendicular magnetic recording head according to one embodiment includes a main pole; first magnetic films arranged on both sides of the main pole in a track width direction via nonmagnetic films; and a second magnetic film arranged on a trailing side of the main pole via a nonmagnetic film; wherein the depths of the first magnetic films from an air bearing surface are smaller than the depth of the second magnetic film from the air bearing surface at least at a periphery of the main pole. A perpendicular magnetic recording head according to another embodiment includes a main pole; first magnetic films arranged on both sides of the main pole in a track width direction via nonmagnetic films; and a second magnetic film arranged on a trailing side of the main pole via a nonmagnetic film; wherein the main pole and the first magnetic films have respective tapered portions whose thicknesses become larger toward the side opposite to an air bearing surface, and the tapered portions are in contact with the second magnetic film. Additional embodiments are also presented.

    Abstract translation: 根据一个实施例的垂直磁记录头包括主极; 通过非磁性膜在磁道宽度方向上布置在主极两侧的第一磁膜; 以及通过非磁性膜布置在所述主极的后侧的第二磁性膜; 其中来自空气支承表面的第一磁性膜的深度至少在主极的周边处小于来自空气支承表面的第二磁性膜的深度。 根据另一实施例的垂直磁记录头包括主极; 通过非磁性膜在磁道宽度方向上布置在主极两侧的第一磁膜; 以及通过非磁性膜布置在所述主极的后侧的第二磁性膜; 其中，所述主极和所述第一磁性膜具有各自的锥形部分，所述锥形部分的厚度朝着与空气支承表面相对的一侧变大，并且所述锥形部分与所述第二磁性膜接触。 还提供了另外的实施例。

    Thin film magnetic head with high Fe alloy plating film and manufacturing method thereof
    4.
    发明授权
    Thin film magnetic head with high Fe alloy plating film and manufacturing method thereof 失效
    具有高Fe合金镀膜的薄膜磁头及其制造方法

    公开(公告)号：US07589937B2

    公开(公告)日：2009-09-15

    申请号：US10894723

    申请日：2004-07-19

    Applicant: Gen Oikawa ,  Kazue Kudo ,  Youji Maruyama ,  Noriyuki Saiki ,  Hiromi Shiina

    Inventor： Gen Oikawa ,  Kazue Kudo ,  Youji Maruyama ,  Noriyuki Saiki ,  Hiromi Shiina

    IPC: G11B5/127

    CPC classification number: G11B5/3116 ,  G11B5/147 ,  Y10T29/49032

    Abstract: Embodiments of the invention provide a lustrous and uniform plating film having high-performance magnetic characteristics and a thin film magnetic head usable in a high frequency recording band by using the plating film of the invention at a magnetic pole portion. Plating is performed in a plating bath at a low pH of about 1.5 to 2.3. The accuracy of pH control is improved. A magnetic film with the addition of a high resistive metal such as Cr or Mo is formed under the plating condition. Further, the magnetic characteristic is improved by applying a heat treatment to the plating film in a magnetic field, according to specific embodiments of the present invention. A plating film with brightness and uniformity having high saturation magnetic flux density can be formed by reducing the hysteresis loss and the eddy current loss as the magnetic characteristics by the above techniques.

    Abstract translation: 本发明的实施例通过使用本发明的镀膜在磁极部分提供具有高性能磁特性的光泽均匀的镀膜和可用于高频记录带的薄膜磁头。 电镀在约1.5至2.3的低pH值的电镀浴中进行。 pH控制的准确性得到提高。 在电镀条件下形成具有添加诸如Cr或Mo的高电阻金属的磁性膜。 此外，根据本发明的具体实施方式，通过在磁场中对镀膜进行热处理来提高磁特性。 通过上述技术，可以通过减小作为磁特性的磁滞损耗和涡流损耗来形成具有高饱和磁通密度的亮度和均匀性的电镀膜。

    Magnetic shield, manufacturing method thereof and thin film magnetic head employing the same
    6.
    发明授权
    Magnetic shield, manufacturing method thereof and thin film magnetic head employing the same 有权
    磁屏蔽，其制造方法和使用该磁屏蔽的薄膜磁头

    公开(公告)号：US07995311B2

    公开(公告)日：2011-08-09

    申请号：US11820554

    申请日：2007-06-19

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

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

    IPC: G11B5/147

    CPC classification number: G11B5/3116 ,  G11B5/1278 ,  G11B5/3912 ,  G11B5/3967

    Abstract: Embodiments of the present invention provide a magnetic shield composed of size-controlled small crystal grains and provide a more after-write read noise free thin film magnetic head. According to one embodiment of the present invention, an upper magnetic shield uses 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 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). Each layer's crystal structure is different from that of its upper and lower layers, which results in size-controlled small crystal grains since the epitaxial growth is broken. Since crystal grains are reduced in size, it is possible to suppress the after-write read noise and therefore attain a read head which allows recording at higher frequencies.

    Abstract translation: 本发明的实施例提供一种由尺寸控制的小晶粒组成的磁屏蔽，并提供更多的后写入无噪声薄膜磁头。 根据本发明的一个实施例，上磁屏蔽使用通过交替层叠面心立方（fcc）结晶磁性薄膜和体心立方（bcc）结晶磁性薄膜而形成的多层磁性膜， 电镀。 电镀浴温度为30±1℃，pH为约2.0-1.0〜2.0 + 0.5，Ni2 +和5〜15（g / l）的金属离子浓度约为5〜25（g / 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）。 每层的晶体结构与其上层和下层的晶体结构不同，这导致尺寸控制的小晶粒，因为外延生长破裂。 由于晶粒尺寸减小，因此可以抑制写入后的读取噪声，从而获得允许以较高频率记录的读取头。

    Thin film magnetic head and manufacturing method thereof
    8.
    发明申请
    Thin film magnetic head and manufacturing method thereof 审中-公开
    薄膜磁头及其制造方法

    公开(公告)号：US20090154014A1

    公开(公告)日：2009-06-18

    申请号：US12313965

    申请日：2008-11-25

    Applicant: Kazue Kudo ,  Hiromi Shiina ,  Yoji Maruyama ,  Gen Oikawa

    Inventor： Kazue Kudo ,  Hiromi Shiina ,  Yoji Maruyama ,  Gen Oikawa

    IPC: G11B5/127 ,  C25D3/56

    CPC classification number: G11B5/3163 ,  C25D3/562 ,  C25D5/08 ,  C25D5/18 ,  C25D21/10 ,  G11B5/147 ,  G11B5/3109

    Abstract: Embodiments of the present invention improve the recording density of a magnetic disk drives by providing a write head capable of writing adequately on a narrow trackwidth and high coercivity recording media. According to one embodiment, a thin film magnetic head has a write head which comprises at least a main magnetic pole, a yoke and a return pole, wherein a magnetic film which constitutes at least a part of the main magnetic pole, the yoke or the return pole is formed by alternately plating first magnetic layers and second magnetic layers, each of the first magnetic layer being of the body-centered cubic phase and containing at least two of elements Co, Ni and Fe, and each of the second magnetic layer being of the face-centered cubic phase and containing at least two of elements Co, Ni and Fe. The thin-film magnetic head can attain high Bs even if the magnetic film is thinned. In addition, high μ can be attained even when the recording frequency is high.

    Abstract translation: 本发明的实施例通过提供能够在窄轨道宽度和高矫顽力记录介质上充分写入的写入头来提高磁盘驱动器的记录密度。 根据一个实施例，薄膜磁头具有至少包括主磁极，磁轭和返回磁极的写入头，其中构成主磁极的至少一部分的磁性膜，磁轭或 返回极通过交替地电镀第一磁性层和第二磁性层而形成，每个第一磁性层是体心立方相，并且包含元素Co，Ni和Fe中的至少两种，并且每个第二磁性层是 的面心立方相并含有至少两种元素Co，Ni和Fe。 即使磁性膜变薄，薄膜磁头也可以达到高的Bs。 此外，即使记录频率高，也可以获得高的μ。

    Magnetic thin film head
    9.
    发明授权
    Magnetic thin film head 失效
    磁性薄膜头

    公开(公告)号：US07485378B2

    公开(公告)日：2009-02-03

    申请号：US11084683

    申请日：2005-03-18

    Applicant: Gen Oikawa ,  Kazue Kudo ,  Youji Maruyama ,  Hiromi Shiina

    Inventor： Gen Oikawa ,  Kazue Kudo ,  Youji Maruyama ,  Hiromi Shiina

    IPC: G11B5/127

    CPC classification number: B32B15/01 ,  G11B5/21 ,  Y10T428/115 ,  Y10T428/1186

    Abstract: A magnetic film capable of generating strong magnetic fields even in a high frequency region, a manufacturing method therefore and a thin film magnetic head capable of recording even in a high frequency region are provided. In one embodiment, the magnetic film is manufactured by using a 88FeNi film of 200 nm thick having minimum Hk of 0.32 Oe (25.6 A/m) as a main magnetic film and selecting a 20 wt % FeNi film of a similar FeNi alloy plating film having low Hk and low Hc as an interlayer material. A stacked film comprising (88FeNi/20FeNi)×10 layers is prepared so that the total thickness of the main magnetic film is 2 μm. The 88FeNi film is prepared by application of a DC current in a 88FeNi plating bath, and the 20FeNi film is prepared by pulse plating successively in the same bath.

    Abstract translation: 提供了即使在高频区域也能够产生强磁场的磁性膜，因此制造方法以及即使在高频区域也能够进行记录的薄膜磁头。 在一个实施例中，通过使用具有最小Hk为0.32Oe（25.6A / m）的200nm厚度的88FeNi膜作为主要磁性膜并选择类似的FeNi合金镀膜的20wt％FeNi膜来制造磁性膜 具有低Hk和低Hc作为中间层材料。 制备包含（88FeNi / 20FeNi）×10层的层叠膜，使得主磁性膜的总厚度为2μm。 通过在88FeNi电镀浴中施加DC电流制备88FeNi膜，并通过在相同的浴中连续脉冲电镀制备20FeNi膜。

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