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50 条记录 (耗时 0.032 秒)

    Magnetic recording apparatus and magnetic head with superconducting material
    32.
    发明授权
    Magnetic recording apparatus and magnetic head with superconducting material 失效
    磁记录装置和带超导材料的磁头

    公开(公告)号：US5109312A

    公开(公告)日：1992-04-28

    申请号：US495095

    申请日：1990-03-19

    申请人： Takahiko Kato ,  Jiro Kuniya ,  Takao Imagawa ,  Katsuzo Aihara

    发明人： Takahiko Kato ,  Jiro Kuniya ,  Takao Imagawa ,  Katsuzo Aihara

    IPC分类号： G11B5/00 ,  G11B5/012 ,  G11B5/11 ,  G11B5/127 ,  G11B5/187 ,  G11B5/245 ,  G11B5/31 ,  G11B5/33 ,  G11B31/00 ,  G11B33/00

    CPC分类号： G11B5/012 ,  G11B31/00 ,  G11B33/00 ,  G11B5/00 ,  G11B5/1278 ,  G11B5/187 ,  G11B5/245 ,  G11B5/3159 ,  G11B5/332 ,  G11B5/11 ,  Y10S505/701 ,  Y10S505/872

    摘要： A magnetic recording apparatus with a magnetic head, superconductive layers formed over at least flux generating surfaces of the magnetic head and normal conductive regions of small size for passing the flux provided in the superconductive layers, over the flux generating surfaces, so as not to form a closed magnetic circuit so as to enable reversible spontaneous magnetization in a magnetic recording medium proximate thereto. The minimum unit size (recording wavelength) of the reversible spontaneous magnetization in magnetic recording of the magnetic recording medium can be reduced from the order of 1 .mu.m to that of 0.1 .mu.m. Thus it is possible to increase the surface recording density of the magnetic recording medium utilizing more than 100 Mb/in.sup.2, comparable to the density achieved by the opto-magnetic recording. This in turn makes it possible to provide a large disc apparatus having a capacity of 60 MB or more.

    摘要翻译： 具有磁头的磁记录装置，至少形成在磁头的磁通产生表面上的超导层和小尺寸的普通导电区域，用于使设置在超导层中的焊剂通过焊剂产生表面，以便不形成 封闭的磁路，以便在靠近其的磁记录介质中实现可逆的自发磁化。 磁记录介质的磁记录中的可逆自发磁化的最小单位尺寸（记录波长）可以从1μm到0.1μm的数量级减小。 因此，与通过光磁记录实现的密度相比，可以增加磁记录介质的表面记录密度，其利用大于100Mb / in2。 这又可以提供具有60MB以上的容量的大型盘装置。

    Read-write head
    37.
    发明授权
    Read-write head 失效
    读写头

    公开(公告)号：US06275360B1

    公开(公告)日：2001-08-14

    申请号：US09159752

    申请日：1998-09-24

    申请人： Kazuhiro Nakamoto ,  Takashi Kawabe ,  Tetsuo Kobayashi ,  Shun-ichi Marumi ,  Shinji Narishige ,  Takao Imagawa

    发明人： Kazuhiro Nakamoto ,  Takashi Kawabe ,  Tetsuo Kobayashi ,  Shun-ichi Marumi ,  Shinji Narishige ,  Takao Imagawa

    IPC分类号： G11B539

    CPC分类号： G11B5/3967 ,  G11B5/11 ,  G11B5/3109 ,  G11B5/3912

    摘要： A read-write head is capable of suppressing fluctuation on a reproduced waveform caused by repetition of a writing and reading operation, and is capable suppressing noise appearing in the reproduced waveform just after a writing operation is carried out. The read-write head has an upper magnetic core, an upper shield also serving as an lower magnetic core, a lower shield and a magnetoresistive film arranged between the upper shield and the lower shield. The upper shield has a soft magnetic film having a magnitude of anisotropy field of 5 to 30 Oe, or is a multilayer film composed of a high saturation magnetic flux density film and a negative magneto-striction film. The lower shield has a soft magnetic film having a magnitude of anisotropy field of 5 to 30 Oe.

    摘要翻译： 读写头能够抑制由重复写入和读取操作引起的再现波形的波动，并且能够在刚刚执行写入操作之后抑制再现波形中出现的噪声。 读写头具有上磁芯，也可用作下磁芯的上屏蔽，下屏蔽和布置在上屏蔽和下屏蔽之间的磁阻膜。 上屏蔽具有各向异性磁场强度为5〜30Oe的软磁性膜，或者是由高饱和磁通密度膜和负磁致密膜构成的多层膜。 下屏蔽具有各向异性磁场强度为5〜30Oe的软磁性膜。

    Magnetic head
    38.
    发明授权
    Magnetic head 失效
    磁头

    公开(公告)号：US6120919A

    公开(公告)日：2000-09-19

    申请号：US114946

    申请日：1998-07-14

    申请人： Satoshi Shigematsu ,  Takao Imagawa ,  Koichi Nishioka ,  Hiroshi Kamio ,  Katsuhisa Usami

    发明人： Satoshi Shigematsu ,  Takao Imagawa ,  Koichi Nishioka ,  Hiroshi Kamio ,  Katsuhisa Usami

    IPC分类号： G11B5/012 ,  G11B5/39 ,  G11B5/66

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/3903 ,  G11B2005/3996 ,  Y10S428/90 ,  Y10T428/1121 ,  Y10T428/115 ,  Y10T428/1193

    摘要： Magnetoresistive and spin valve heads have a layered structure. Common to each of the layered structures of these heads is the combination of a soft-magnetic layer of essentially NiFe near a spacer layer of essentially Ta, which is used for insuring (111) crystal orientation of the NiFe layer. An isolate layer is interposed between the spacer layer and the soft-magnetic layer to prevent a diffusion boundary from being created at the interface of these layers which tends to degrade the soft-magnetic property of the NiFe layer, especially when the thickness of the soft-magnetic layer is 10 and nm or less. The isolate layer is one of a composition in which the principal component is a magnetic element that is not solid soluble with Ta, a composition in which the principal component is a non-magnetic element that is not solid soluble with Ni and Fe, a composition in which the principal component is at least one of the elements of Co, Fe, Ti, V, Zr, Nb, Mo, Hf, W, Tc, Ru, Rh, Pd, Ag, Re, Os, Ir, Pt and Au; or a composition in which the principal component is of Co.sub.(100-x) Fe.sub.(x), where 20.gtoreq.X>O. The isolate layer has a structure that is amorphous, an fcc structure.

    摘要翻译： 磁阻和旋转阀头具有分层结构。 这些磁头的每个层状结构的共同之处在于用于确保NiFe层的（111）晶体取向的基本上Ta的间隔层附近的基本上NiFe的软磁性层的组合。 在间隔层和软磁性层之间插入隔离层，以防止在这些层的界面处产生扩散边界，这倾向于降低NiFe层的软磁特性，特别是当软质的厚度 磁性层为10nm以下。 隔离层是其中主要成分是与Ta不固溶的磁性元素的组合物之一，其中主要成分是不与Ni和Fe固溶的非磁性元素的组成，组成 其中主要成分是Co，Fe，Ti，V，Zr，Nb，Mo，Hf，W，Tc，Ru，Rh，Pd，Ag，Re，Os，Ir，Pt和Au中的至少一种元素 ; 或其中主成分为Co（100-x）Fe（x）的组合物，其中20> = X> O。 隔离层具有无定形，fcc结构的结构。

    Magnetoresistive head and manufacturing method therefor
    39.
    发明授权
    Magnetoresistive head and manufacturing method therefor 失效
    磁阻头及其制造方法

    公开(公告)号：US6088196A

    公开(公告)日：2000-07-11

    申请号：US888524

    申请日：1997-07-07

    申请人： Shigeru Tadokoro ,  Katsuro Watanabe ,  Takao Imagawa ,  Yasunari Tajima

    发明人： Shigeru Tadokoro ,  Katsuro Watanabe ,  Takao Imagawa ,  Yasunari Tajima

    IPC分类号： G11B5/31 ,  G11B5/39

    CPC分类号： G11B5/3932 ,  G11B5/3967

    摘要： A magnetoresistive head comprising a magnetoresistive film having electric resistance varying with a magnetic field, a pair of electrodes for causing a current to flow into the magnetoresistive film, and a soft magnetic film for applying a transverse biasing field to the magnetoresistive film, the soft magnetic film containing at least one material of iron, cobalt, and nickel, and at least one compound of zirconium oxide, aluminum oxide, hafnium oxide, titanium oxide, beryllium oxide, magnesium oxide, a rare earth oxygen compound, zirconium nitride, hafnium nitride, aluminum nitride, titanium nitride, beryllium nitride, magnesium nitride, silicon nitride, and a rare earth nitrogen compound. The electric resistance of the soft magnetic film is raised by adding a compound thereto and current diverted from the magnetoresistive film to the soft magnetic film decreases, so that the reproducing voltage of the magnetoresistive head rises.

    摘要翻译： 磁阻头包括具有随磁场变化的电阻的磁阻膜，用于使电流流入磁阻膜的一对电极和用于向磁阻膜施加横向偏置场的软磁膜，软磁体 含有至少一种铁，钴和镍的材料的膜，以及至少一种氧化锆，氧化铝，氧化铪，氧化钛，氧化铍，氧化镁，稀土氧化合物，氮化锆，氮化铪， 氮化铝，氮化钛，氮化铍，氮化镁，氮化硅和稀土氮化合物。 通过向其中添加化合物来提高软磁膜的电阻​​，并且从磁阻膜向软磁膜转移的电流减小，使得磁阻磁头的再现电压升高。