Magnetic head with magneto-resistance effect element disposed on opposite side of magnetic core pair from recording coil
    1.
    发明授权
    Magnetic head with magneto-resistance effect element disposed on opposite side of magnetic core pair from recording coil 失效
    具有磁阻效应元件的磁头设置在与记录线圈的磁芯对的相对侧上

    公开(公告)号:US06285531B1

    公开(公告)日:2001-09-04

    申请号:US09040353

    申请日:1998-03-16

    IPC分类号: G11B539

    摘要: A magnetic head has a recording magnetic yoke on the side of an air bearing surface of which a recording magnetic gap film is interposed and a reproducing magnetic yoke on the side of an air bearing surface of which a reproducing magnetic gap film is interposed. The magnetic yoke can serve concurrently for recording/reproducing. A recording coil supplying a recording magnetic flux to a recording medium through a recording magnetic yoke is disposed along one main surface of a magnetic yoke. An MR element in which a signal magnetic flux is led from a recording medium through a reproducing magnetic yoke is disposed along the other main surface on opposite side from a recording coil of a magnetic yoke. Or, at least on extension of a film plane of a magnetic gap film, a ferromagnetic layer is disposed so as for a film plane to exist in almost perpendicular direction relative to the film plane. According to such a head structure, reproducing sensitivity decrease of the reproducing MR head due to noise or occurrence of recording fringe can be suppressed.

    摘要翻译: 磁头在记录磁隙膜的空气轴承表面一侧具有记录磁轭,并且在其中插入有再现磁隙膜的空气轴承表面侧的再现磁轭。 磁轭可以同时用于记录/再现。 通过记录磁轭向记录介质提供记录磁通的记录线圈沿磁轭的一个主表面设置。 通过再现磁轭将信号磁通从记录介质引出的MR元件沿与磁轭的记录线圈相反的另一个主表面设置。 或者,至少在磁隙膜的膜平面延伸的情况下,设置铁磁层,以使膜平面相对于膜平面以大致垂直的方向存在。 根据这种头部结构,可以抑制由于噪声或记录条纹的发生而导致的再现MR磁头的再现灵敏度降低。

    Magnetic head
    2.
    发明授权
    Magnetic head 有权
    磁头

    公开(公告)号:US6108167A

    公开(公告)日:2000-08-22

    申请号:US150926

    申请日:1998-09-10

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

    摘要: At least one magnetic pole out of a pair of magnetic poles is provided with a T-shaped magnetic pole having a magnetic pole chip at the position contacting with a magnetic gap and an auxiliary magnetic pole which is wider than thereof. The proximity of an air bearing surface of the T-shaped magnetic pole is composed of a laminated film containing a magnetic material layer with a high saturated magnetic flux density which composes the magnetic pole chip and a portion of the auxiliary magnetic pole and a magnetic material layer with a low saturated magnetic flux density which composes the remaining portion of the auxiliary magnetic pole. When the front portion of the magnetic pole with the track width of 1.8 .mu.m or less is composed of a laminated film containing a magnetic material layer having a high saturated magnetic flux density and a magnetic material layer having a low saturated magnetic flux density, the thickness of the magnetic material layer having the high saturated magnetic flux density is 0.5 .mu.m or more. According to the above described magnetic pole, the magnetic saturation near the tip portion of the magnetic pole is controlled, so that preferable magnetic field strength and magnetic field gradient can be attained when the track width is narrowed.

    摘要翻译: 在一对磁极中的至少一个磁极设置有在与磁隙接触的位置处具有磁极片的T形磁极和比其宽的辅助磁极。 T形磁极的空气轴承表面的接近度由包含构成磁极片和辅助磁极的一部分的磁性材料层和具有高饱和磁通密度的磁性材料层的叠层膜构成, 具有构成辅助磁极的剩余部分的低饱和磁通密度的层。 当轨道宽度为1.8μm或更小的磁极的前部由包含具有高饱和磁通密度的磁性材料层和具有低饱和磁通密度的磁性材料层的层叠膜构成时, 具有高饱和磁通密度的磁性材料层的厚度为0.5μm以上。 根据上述磁极,控制磁极尖端部附近的磁饱和,从而当磁道宽度变窄时可以获得优选的磁场强度和磁场梯度。

    Method of manufacturing a semiconductor element
    4.
    发明授权
    Method of manufacturing a semiconductor element 失效
    制造半导体元件的方法

    公开(公告)号:US4383886A

    公开(公告)日:1983-05-17

    申请号:US318416

    申请日:1981-11-05

    摘要: An improved semiconductor element-manufacturing method which saves a semiconductor wafer from the occurrence of cracks or damage during the manufacture of a semiconductor element and enables solder layers to be deposited without irregularities in the thickness. The method starts with the step of forming a first metal layer acting as an ohmic electrode on each side of the element regions of a semiconductor wafer in which a plurality of active elements are formed or on the whole surface of each side of the semiconductor wafer. Then a second metal layer which has an anticorrosive property and acts as a brazing material when the semiconductor element is mounted between a pair of electrodes is selectively deposited by electroplating on each of the element areas in the first metal layers.Finally, those portions of the semiconductor wafer which are interposed between the active elements are chemically etched off with the second metal layers used as masks to separate the semiconductor elements from each other, thereby producing a plurality of semiconductor elements, each of which has its surfaces coated with the first and second metal layers.

    摘要翻译: 一种改进的半导体元件制造方法,其在半导体元件制造期间保存半导体晶片免受裂纹或损坏的发生,并且能够在没有厚度的不规则的情况下沉积焊料层。 该方法开始于在形成有多个有源元件的半导体晶片的元件区域的每一侧或半导体晶片的每一侧的整个表面上形成用作欧姆电极的第一金属层的步骤。 然后,当半导体元件安装在一对电极之间时,具有防锈性并用作钎焊材料的第二金属层通过电镀在第一金属层中的每个元件区域上选择性地沉积。 最后,将介于有源元件之间的半导体晶片的这些部分用用作掩模的第二金属层进行化学蚀刻,以将半导体元件彼此分离,由此产生多个半导体元件,每个半导体元件的表面 涂覆有第一和第二金属层。

    Computer readable medium having a program using particle method
    6.
    发明授权
    Computer readable medium having a program using particle method 失效
    具有使用粒子法的程序的计算机可读介质

    公开(公告)号:US07672821B2

    公开(公告)日:2010-03-02

    申请号:US12218637

    申请日:2008-07-18

    申请人: Akio Hori Hiromi Kojo

    发明人: Akio Hori Hiromi Kojo

    IPC分类号: G06G7/48

    CPC分类号: G06F17/5009 G06F2217/16

    摘要: Finite element methods are unsuitable for a dispersed system. Particle methods suitable for a dispersed system are limited in their particle shapes of only spheres that require many particles to model a complicated shape especially in 3D. Proposed procedures for a particle method are roughly as follows. 1): Judging the existence of the contact between particles as that between mathematically-smooth closed surfaces representing particle shape and size. 2): Assuming an imaginary contact point and an imaginary contact plane the same as when both closed surfaces are reduced with the same scale to touch at one point. 3): Calculating imaginary contact area and imaginary contact stiffness using the above point and plane. Based on these procedures, particle shapes are not limited but smooth. Therefore, a more complicated shaped problem in a dispersed system can be analyzed with a smaller number of particles. Additionally, combined use with finite elements enlarges usability.

    摘要翻译: 有限元方法不适用于分散系统。 适用于分散系统的粒子方法仅限于需要许多粒子以特别是3D模拟复杂形状的球体的粒子形状。 粒子方法的拟议程序大致如下。 1):判断颗粒之间的接触存在于表示颗粒形状和尺寸的数学平滑闭合表面之间。 2):假设虚拟接触点和虚拟接触平面与当两个闭合表面都以相同的刻度在一点上相互缩小时相同。 3):使用上述点和平面计算假想接触面积和假想接触刚度。 基于这些程序,粒子形状并不局限于光滑。 因此,可以用较少数量的颗粒分析分散系统中更复杂的成型问题。 另外,结合使用有限元可以扩大可用性。

    Thin-film magnetic head having a portion of the upper magnetic core
coplanar with a portion of the lower magnetic core
    7.
    发明授权
    Thin-film magnetic head having a portion of the upper magnetic core coplanar with a portion of the lower magnetic core 失效
    薄膜磁头具有与下部磁芯的一部分共面的上部磁芯的一部分

    公开(公告)号:US5872693A

    公开(公告)日:1999-02-16

    申请号:US826749

    申请日:1997-03-24

    IPC分类号: G11B5/31

    摘要: A thin-film magnetic head comprising a lower magnetic core formed on a substrate, an upper magnetic core formed on the lower magnetic core with a magnetic gap therebetween, and a coil interposed between the lower magnetic core and the upper magnetic core as insulated from the lower magnetic core and the upper magnetic core, characterized in that at least either of the lower magnetic core and the upper magnetic core comprises a front body of a magnetic pole facing a magnetic recording medium and a rear body of a magnetic pole having part thereof superposed on the front body of the magnetic pole, the rear body of the magnetic pole is disposed as recessed from the head surface facing the medium and held in contact with the front body of the magnetic pole in a plane, the plane is terminated at a rear of the end of the front body of the magnetic pole, and the rear body of the magnetic pole has a shape curved or bent in the direction opposite to the magnetic gap, and further the front body of the magnetic pole is composed of a magnetic member embedded in a trench formed in advance in an insulating layer.

    摘要翻译: 一种薄膜磁头,包括形成在基板上的下磁芯,形成在下磁芯上的上磁芯,其间具有磁隙,以及插入在下磁芯和上磁心之间的线圈, 下磁芯和上磁芯,其特征在于,下磁芯和上磁芯中的至少一个包括面向磁记录介质的磁极的前体和磁极的后体,其部分叠加 在磁极的前体上,磁极的后体被设置为从面向介质的头表面凹陷并且在平面中与磁极的前体保持接触,平面终止在后面 的磁极的前体的端部,并且磁极的后体具有与磁隙相反的方向弯曲或弯曲的形状,并且还具有前体o f磁极由嵌入在预先形成在绝缘层中的沟槽中的磁性构件组成。

    Optical recording medium with fluorine resin adhesive
    8.
    发明授权
    Optical recording medium with fluorine resin adhesive 失效
    带有氟树脂粘合剂的光记录介质

    公开(公告)号:US4782477A

    公开(公告)日:1988-11-01

    申请号:US903487

    申请日:1986-09-04

    IPC分类号: G11B7/24 G11B11/105 G11B11/12

    摘要: A magneto-optical recording disk has a transparent resinous substrate with a pre-groove, and a metallic recording layer formed above the substrate. A transparent adhesive layer is provided between the substrate and the recording layer, for allowing a laser beam to pass therethrough, and for causing the recording layer to be tightly adhered to the substrate to thereby prevent the recording layer from being peeled off from the substrate. The adhesive layer is comprised of a fluorine resin material.

    摘要翻译: 磁光记录盘具有带有预凹槽的透明树脂基底和形成在基底上的金属记录层。 在基板和记录层之间设置透明粘合剂层,用于允许激光束通过,并且使记录层紧密地粘附到基板上,从而防止记录层从基板剥离。 粘合剂层由氟树脂材料构成。

    Hard magnetic film structural body, magnetoresistance effect device thereof, magnetic head, magnetic recording/reproducing head thereof, and magnetic record medium thereof, and magnetic storing apparatus thereof
    9.
    发明申请

    公开(公告)号:US20060198063A1

    公开(公告)日:2006-09-07

    申请号:US11417195

    申请日:2006-05-04

    IPC分类号: G11B5/127 G11B5/33

    摘要: A base film of a hard magnetic film containing Co as a structural element has a crystal metal base film such as a Cr film formed on the main surface of a substrate and a reactive base film (mixing layer) formed between the substrate and the crystal metal base film and having a reactive amorphous layer containing a structural element of the substrate and a structural element of the crystal metal base film. A hard magnetic film containing Co as a structural element is formed on the crystal metal base film. With the crystal metal base film such as the Cr film formed on an amorphous layer, a hard magnetic film with a bi-crystal structure can be obtained with high reproducibility. With the hard magnetic film, magnetic characteristics such as coercive force Hc, residual magnetization Mr, saturated magnetization Ms, and square ratio S can be improved without need to use a thick base film. The hard magnetic film containing Co as a structural element is applied to a bias magnetic field applying film of a magnetoresistance effect device and a record layer of a magnetic record medium.

    摘要翻译: 含有Co作为结构元件的硬磁性膜的基膜具有形成在基板主表面上的Cr膜等晶体金属基膜和在基板和结晶金属之间形成的反应性基膜(混合层) 并且具有包含基板的结构元件的反应性非晶层和晶体金属基膜的结构元件。 在晶体金属基膜上形成含有Co作为结构元素的硬磁性膜。 利用在非晶层上形成的Cr膜等晶体金属基膜,可以以高再现性获得具有双晶结构的硬磁性膜。 对于硬磁性膜,可以提高矫顽力Hc,剩余磁化强度Mr,饱和磁化强度Ms和平方比S等磁特性,而无需使用厚基膜。 含有Co作为结构元件的硬磁性膜被施加到磁阻效应装置的偏磁场施加膜和磁记录介质的记录层。

    Magnetic head manufacturing method
    10.
    发明授权
    Magnetic head manufacturing method 失效
    磁头制造方法

    公开(公告)号:US06751846B2

    公开(公告)日:2004-06-22

    申请号:US10401869

    申请日:2003-03-31

    IPC分类号: G11B5127

    摘要: A method for manufacturing a magnetic head which includes a lower write pole having a projection, an upper write pole having a projection opposed to the projection of the lower write pole, and a magnetic gap interposed between the projection of the upper write pole and the projection of the lower write pole, comprising: a first step of making the magnetic gap on the projection of the lower write pole; a second step of making a non-magnetic material layer on the lower write pole, the non-magnetic material layer having a projection on its top surface in positional alignment with the projection of the lower write pole; a third step of making a mask layer on the non-magnetic material layer, the mask layer having an opening in which the top surface of the projection of the non-magnetic material layer is exposed; a fourth step of making a curved recess in the non-magnetic material layer by isotropically etching the non-magnetic material layer through the opening of the mask layer; a fifth step of making an approximately tapered recess down from the bottom of the curved recess by anisotropically etching the non-magnetic material layer through the opening of the mask layer; and a sixth step of making the upper write pole by burying a magnetic material in the tapered recess and the curved recess is provided.

    摘要翻译: 一种用于制造磁头的方法,该磁头包括具有突出部的下部写入极,具有与下部写入磁极的突起相对的突出部的上部写入磁极,以及插入在上部写入磁极和突起之间的磁隙 包括:使下部写入极的投影上的磁隙形成的第一步骤; 在下写入磁极上制作非磁性材料层的第二步骤,非磁性材料层在其顶表面上具有与下写入磁极的突起位置对准的突起; 在非磁性材料层上形成掩模层的第三步骤,所述掩模层具有露出所述非磁性材料层的突起的顶表面的开口; 通过所述掩模层的开口对所述非磁性材料层进行各向同性蚀刻来制造所述非磁性材料层中的弯曲凹部的第四工序; 第五步骤,通过通过掩模层的开口各向异性蚀刻非磁性材料层,从弯曲凹槽的底部向下形成大致锥形的凹陷; 并且提供通过将磁性材料埋入锥形凹部和弯曲凹部中来制造上部写入极的第六步骤。