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23 条记录 (耗时 0.03 秒)

    Magnetic recording apparatus and magnetic head with superconducting material
    1.
    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。

    Permanent current switch and superconducting magnet system
    4.
    发明授权
    Permanent current switch and superconducting magnet system 失效
    永磁电流开关和超导磁体系统

    公开(公告)号：US5757257A

    公开(公告)日：1998-05-26

    申请号：US309415

    申请日：1994-09-20

    申请人： Toshiya Doi ,  Takesi Ozawa ,  Katsuzo Aihara ,  Tomoichi Kamo ,  Kazuhisa Mori ,  Nobuhiro Hara

    发明人： Toshiya Doi ,  Takesi Ozawa ,  Katsuzo Aihara ,  Tomoichi Kamo ,  Kazuhisa Mori ,  Nobuhiro Hara

    IPC分类号： H01F6/00 ,  H01L39/20 ,  H01F1/00

    CPC分类号： H01F6/008 ,  H01L39/20

    摘要： Superconducting magnet system using a liquid helium for its operation and a permanent current switch and a system thereof applied to the superconducting magnet system employing a permanent current loop created by a superconducting material developing superconductivity when cooled. The system includes a superconducting magnet dipped in the liquid helium, the permanent current switch for driving or interrupting the superconducting magnet, and a cryostat for accommodating the superconducting magnet and the permanent current switch, and the permanent current switch is arranged over a liquid surface of the liquid helium.

    摘要翻译： 使用液氦作为其操作的超导磁体系统和永久电流开关及其系统应用于超导磁体系统，该超导磁体采用由冷却时产生超导材料的超导材料产生的永久电流回路。 该系统包括浸在液氦中的超导磁体，用于驱动或中断超导磁体的永久电流开关，以及用于容纳超导磁体和永久电流开关的低温恒温器，并且永磁电流开关设置在 液氦。

    Magnetic field generator, a persistent current switch assembly for such a magnetic field generator, and the method of controlling such magnetic field generator
    5.
    发明授权
    Magnetic field generator, a persistent current switch assembly for such a magnetic field generator, and the method of controlling such magnetic field generator 失效
    磁场发生器，用于这种磁场发生器的持续电流开关组件，以及控制这种磁场发生器的方法

    公开(公告)号：US5680085A

    公开(公告)日：1997-10-21

    申请号：US462762

    申请日：1995-06-05

    申请人： Katsuzo Aihara ,  Shinpei Matsuda ,  Tomoichi Kamo

    发明人： Katsuzo Aihara ,  Shinpei Matsuda ,  Tomoichi Kamo

    IPC分类号： G01R33/3815 ,  H01L39/20 ,  H01F1/00

    CPC分类号： H01L39/20 ,  G01R33/3815 ,  Y10S505/882

    摘要： A magnetic field generator has a superconductive coil immersed in a coolant material. When power is supplied to the superconductive coil from a suitable power source, the superconductive coil is energized to generate the magnetic field. The ends of the superconductive coil may then be shorted through a persistent current switch, to maintain the magnetic field without the need for further power. The persistent current switch has a superconductive connection connected across the ends of the superconductive coil and a heater. These components are enclosed in a casing with a gap between these components and the casing. Apertures in the casing permit coolant material to enter the gap. When the heater is energized, it heats the coolant material in the gap until it vaporizes. There is then a significant decrease in the thermal conductivity through the gap and hence the superconductive connection is heated rapidly to its critical temperature. Only low power is needed. When the heater stops being energized, liquid coolant material fills the gap thereby rapidly cooling the superconductive connector to below its critical temperature.

    摘要翻译： 磁场发生器具有浸入冷却剂材料中的超导线圈。 当从合适的电源向超导线圈供电时，超导线圈被通电以产生磁场。 然后，超导线圈的端部可以通过持续电流开关短路，以保持磁场而不需要进一步的功率。 持续电流开关具有连接在超导线圈的端部和加热器两端的超导连接。 这些部件被封装在壳体中，这些部件和壳体之间具有间隙。 套管中的孔允许冷却剂材料进入间隙。 当加热器通电时，它加热间隙中的冷却剂材料，直到其蒸发。 然后，通过间隙导热性显着降低，因此超导连接被迅速加热至其临界温度。 只需要低功耗。 当加热器停止通电时，液体冷却剂材料填充间隙，从而将超导连接器快速冷却到其临界温度以下。