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    Sodium-intervened superconductor and its manufacturing method
    1.
    发明授权
    Sodium-intervened superconductor and its manufacturing method 失效
    钠介导超导体及其制造方法

    公开(公告)号：US6010982A

    公开(公告)日：2000-01-04

    申请号：US222710

    申请日：1998-12-29

    申请人： Nam Hwi Hur ,  Jin Tae Kim ,  Jong Chul Park ,  Yong Ki Park

    发明人： Nam Hwi Hur ,  Jin Tae Kim ,  Jong Chul Park ,  Yong Ki Park

    IPC分类号： C04B35/505 ,  H01L39/12 ,  C04B35/64 ,  H01B12/00

    CPC分类号： H01L39/126 ,  Y10S505/742 ,  Y10S505/78

    摘要： The present invention relates to a sodium-intervened superconductor and its manufacturing method and more particularly, to the sodium-intervened superconductor expressed by the following Formula 1 and its manufacturing method, wherein the superconductor, prepared from a stoichiometric mixture of Y.sub.2 O.sub.3, NaCuO.sub.2, BaCuO.sub.2, Ln.sub.2 O.sub.3 (Ln: lanthanide ion) and CuO under the atmosphere of oxygen, has some advantages in that a) through the use of NaCuO.sub.2, a ternary oxide, as a reactant, the formation of impurities and sodium evaporation may be prevent, and b) through partial substitution of a divalent barium by a trivalent lanthanide group ion, the superconductor is stable in air with a higher critical current density and critical temperature.Formula 1(Na.sub.1-x Y.sub.x)(Ba.sub.1-y Ln.sub.y).sub.2 Cu.sub.3 O.sub.6+.delta.wherein, Ln is a trivalent lanthanide ion other than Ce and Pr; 0.1

    摘要翻译： 本发明涉及钠介导超导体及其制造方法，更具体地说，涉及由下式1及其制造方法表示的钠介导超导体，其中由Y 2 O 3，NaCuO 2，BaCuO 2的化学计量混合物制备的超导体 ，在氧气氛下的Ln2O3（Ln：镧系元素离子）和CuO具有一些优点：a）通过使用三元氧化物NaCuO 2作为反应物，可以防止杂质的形成和钠蒸发，b ）通过三价镧系元素离子部分取代二价钡，超导体在空气中稳定，具有较高的临界电流密度和临界温度。 式（Na1-xYx）（Ba1-yLny）2Cu3O6 +δ其中，Ln是Ce和Pr以外的三价镧系元素离子; 0.1

    Method for preparing manganese-based nitride having nearly zero temperature coefficient of resistivity
    2.
    发明授权
    Method for preparing manganese-based nitride having nearly zero temperature coefficient of resistivity 失效
    具有接近零电阻温度系数的锰基氮化物的方法

    公开(公告)号：US06767525B2

    公开(公告)日：2004-07-27

    申请号：US09873240

    申请日：2001-06-05

    申请人： Nam Hwi Hur ,  Eun Ok Chi ,  Wan Seop Kim

    发明人： Nam Hwi Hur ,  Eun Ok Chi ,  Wan Seop Kim

    IPC分类号： C01B2106

    CPC分类号： C01B21/0637 ,  C01B21/0602 ,  C01P2002/34 ,  C01P2002/72 ,  C01P2002/76 ,  C01P2002/77 ,  C01P2006/32 ,  C01P2006/40 ,  C01P2006/42

    摘要： The present invention relates to a method for preparing manganese-based nitride having nearly zero temperature coefficient of resistivity and more particularly, to the effective method for preparing manganese-based nitride expressed by the formula (1), wherein the manganese-based nitride, prepared by heating the stoichiometric mixture of Mn2N and Cu in an evacuated quartz tube, provides some advantages in that i) the use of the Mn2N compound as a reactant, the formation of impurities and nitrogen evaporation may be prevented, and ii) through nitrogen is tightly bonded between metals, the manganese-based nitride has extremely low (46 ppm/K) temperature coefficient of resistivity. CuNMn3  (1)

    摘要翻译： 本发明涉及一种制备具有接近零电阻温度系数的锰基氮化物的方法，更具体地说，涉及制备由式（1）表示的锰基氮化物的有效方法，其中制备的锰基氮化物 通过加热真空石英管中的Mn2N和Cu的化学计量混合物，提供了一些优点，即i）使用Mn2N化合物作为反应物，可以防止形成杂质和氮气蒸发，以及ii）通过氮气紧密 在金属之间键合，锰基氮化物具有极低（46ppm / K）的电阻率温度系数。