Josephson junction in a wiring pattern of a superconductor oxide
    121.
    发明授权
    Josephson junction in a wiring pattern of a superconductor oxide 失效
    约瑟夫逊结在超导体氧化物的布线图中

    公开(公告)号:US5534715A

    公开(公告)日:1996-07-09

    申请号:US148277

    申请日:1993-11-08

    IPC分类号: H01L39/22 H01L39/24

    CPC分类号: H01L39/2496

    摘要: A Josephson junction is disclosed which includes a substrate of a single crystal having a substantially flat surface, a wiring pattern of an oxide superconductor formed on the flat surface of the substrate, and an altered region formed having a width of 300 nm or less and formed in the wiring pattern to intersect the wiring pattern, the crystal orientations of the wiring pattern on both sides of the altered region being equal to each other. The Josephson junction may be prepared by a process including the steps of: (a) coating a surface of a substrate of a single crystal with a normal metal to form a protecting layer over the surface of the substrate; (b) irradiating a predetermined portion of the protecting layer with a focused ion beam so that an irradiated portion is formed in the substrate; (c) removing the protecting layer from the substrate; and (d) forming a wiring pattern of an oxide superconductor on the surface of the substrate from which the protecting layer has been removed such that the wiring pattern crosses the irradiated portion of the substrate, thereby forming an altered portion in the wiring pattern at a position above the irradiated portion.

    摘要翻译: 公开了一种约瑟夫逊结,其包括具有基本上平坦的表面的单晶的衬底,形成在衬底的平坦表面上的氧化物超导体的布线图案和形成为具有300nm或更小的宽度的改变区域 在与布线图案相交的布线图案中,改变区域两侧的布线图案的晶体取向彼此相等。 约瑟夫逊结可以通过包括以下步骤的方法来制备:(a)用普通金属涂覆单晶的衬底的表面以在衬底的表面上形成保护层; (b)用聚焦离子束照射保护层的预定部分,使得在基板中形成照射部分; (c)从衬底上去除保护层; 以及(d)在已经去除了保护层的基板的表面上形成氧化物超导体的布线图案,使得布线图案与基板的照射部分交叉,从而在布线图案中形成改变部分 位于照射部分上方。

    Bis(ethylenedithio)tetrathiafulvalene.cyanometalate complex
    122.
    发明授权
    Bis(ethylenedithio)tetrathiafulvalene.cyanometalate complex 失效
    双(亚乙基二硫)四硫富瓦烯氰化金属络合物

    公开(公告)号:US5534638A

    公开(公告)日:1996-07-09

    申请号:US429009

    申请日:1995-04-26

    摘要: This describes the following five novel organic substances: Bis (ethylenedithio) tetrathiafulvalene (henceforth to be called BEDT-TTF) compounded with cyanometalate anions in what is called Tetracyano Nickel acid Bis (Ethylenedithio) Tetrathiafulvalene salt.hydrate expressed by (BEDT-TTF).sub.4 [Ni(CN).sub.4 ].H.sub.2 O, Tetracyano Platinum acid Bis (Ethylenedithio) Tetrathiafulvalene salt.hydrate that is expressed by (BEDT-TTF).sub.4 [Pt(CN).sub.4 ].H.sub.2 O, Cyanide Palladium Bis (Ethylenedithio) Tetrathiafulvalene salt that is expressed by (BEDT-TTF)-[Pd(CN).sub.2 ], Tetracyano Palladium acid Bis (Ethylenedithio) Tetrathiafulvalene salt.hydrate that is expressed by (BEDT-TFF).sub.4 [Pd(CN).sub.4 ].H.sub.2 O and Tetracyano Palladium acid Bis (Ethylenedithio) Tetrathiafulvalene salt that is represented by (BEDT-TTF).sub.4 [Pd(CN).sub.4 ]. BEDT-TTF, acting as a common constituent in the crystals of all of the above substances, provides the properties of an insulator, a metal or a superconductor. Anions that construct the framework of BEDT-TTF determine the arrangement of BEDT-TTF and thus the electronic state of the compound. It can be predicted that superconducting phenomena could be discovered in compounds of BEDT-TTF type in which there are compounded cyanometalate anions that have the tendency to form large frameworks so that the effective volume is large as in the case of the novel substances of the present invention.

    摘要翻译: 这描述了以下五种新型有机物质:由(BEDT-TTF)4表示的所谓的四氰基镍酸双(乙二硫)四硫富瓦烯盐水合物与氰化金属阴离子复合的双(亚乙基二硫)四硫富瓦烯(以下称为BEDT-TTF) 由[BEDT-TTF] 4 [Pt(CN)4]·H 2 O,氰化物钯双(亚乙基二硫)四硫富瓦烯盐表示的四硫代双(亚乙基二硫)四硫富瓦烯盐水合物,[Ni(CN)4]·H 2 O, 由(BEDT-TFF)4 [Pd(CN)4]·H 2 O和四氰基钯表示的(BEDT-TTF) - [Pd(CN)2],四氰基钯酸双(亚乙基二硫)四硫富瓦烯盐水合物 由(BEDT-TTF)4 [Pd(CN)4]表示的酸性双(亚乙基二硫)四硫富瓦烯盐。 作为所有上述物质的晶体中的共同成分的BEDT-TTF提供绝缘体,金属或超导体的性质。 构建BEDT-TTF框架的阴离子决定了BEDT-TTF的排列以及化合物的电子状态。 可以预测,在具有复合的氰化金属阴离子的BEDT-TTF型化合物中可以发现超导现象,其具有形成大框架的趋势,使得有效体积大,如在本发明的新物质的情况下 发明。

    High temperature oxide superconductor
    123.
    发明授权
    High temperature oxide superconductor 失效
    高温氧化物超导体

    公开(公告)号:US5468724A

    公开(公告)日:1995-11-21

    申请号:US68587

    申请日:1993-05-27

    摘要: Disclosed herein are high-temperature oxide superconductors of RBa.sub.2 Cu.sub.4 O.sub.8 type, with Ba partly replaced by Sr or Ca, or with R and Ba partly replaced by Ca and Sr, respectively, as represented by the chemical composition formula of R(Ba.sub.1-y Sr.sub.y).sub.2 Cu.sub.4 O.sub.8 or R(Ba.sub.1-z Ca.sub.z).sub.2 Cu.sub.4 O.sub.8 or (R.sub.1-x Ca.sub.x) (Ba.sub.1-y Sr.sub.y).sub.2 Cu.sub.4 O.sub.8. They exhibit superconductivity at high temperatures. Especially, the last one exhibits superconductivity at a higher temperature than the former two. All of them can be made with a less amount of Ba as a deleterious substance, and the first two have improved sinterability. The best results are obtained when they are produced by the process involving the hot hydrostatic pressure treatment of the mixture of raw materials at 850.degree.-1100.degree. C. in an atmosphere composed of an inert gas and oxygen. The process permits a wider selection of Ba raw materials.

    摘要翻译: 本文公开了RBa2Cu4O8型的高温氧化物超导体,其中Ba部分被Sr或Ca取代,或者R和Ba分别被Ca和Sr部分替代,如R(Ba1-ySry)2Cu4O8的化学组成式所示 或R(Ba1-zCaz)2 Cu4O8或(R1-xCax)(Ba1-ySry)2Cu4O8。 它们在高温下表现出超导性。 特别地,最后一个在比前两个更高的温度下表现出超导性。 所有这些都可以用少量的Ba作为有害物质,前两种具有改善的烧结性。 通过在惰性气体和氧气组成的气氛中,在850〜-1100℃的原料混合物进行热静水压处理的方法制造时,得到最好的结果。 该过程允许更广泛地选择Ba原料。