Process for preparing a perovskite type superconductor film
    1.
    发明公开
    Process for preparing a perovskite type superconductor film 失效
    Verfahren zur Herstellung einer supraleintendenDünnenschichtdes Perovskit-Typs。

    公开(公告)号:EP0372808A1

    公开(公告)日:1990-06-13

    申请号:EP89312400.8

    申请日:1989-11-29

    申请人: FUJITSU LIMITED

    IPC分类号: C04B35/00 B32B18/00 H01L39/24

    摘要: A perovskite type superconductor film having a high content, almost a single phase, of high Tc phase, is formed by the steps of: depositing at least one first film of a first material (e.g., a composite oxide of Bi-Sr-Ca-Cu-O system or Tl-Ba-Ca-Cu-O system) con­stituting a perovskite type superconductor over a substrate; depositing at least one second film of a second material containing an oxide or element (Bi₂O₃ , Tl₂O₃ , PbO x , etc., particularly PbO x ) having a vapor pressure of more than 10 ⁻⁴Pa at 800°C at least as a main component over the substrate; to thereby form a stack of the first and second films; and heat treating the stack of the first and second films to form the perovskite type superconductor film on the substrate.

    摘要翻译: 通过以下步骤形成具有高含量,几乎单相的高Tc相的钙钛矿型超导体膜:沉积至少一种第一材料的第一膜(例如,Bi-Sr-Ca- Cu-O系或Tl-Ba-Ca-Cu-O系),在基板上构成钙钛矿型超导体; 在800℃下至少沉积至少一个第二材料的第二材料的第二材料,所述第二材料含有氧化物或元素(Bi 2 O 3,Tl 2 O 3,PbO x等,特别是PbO x),其蒸气压大于10 -4 Pa 基材上的主要成分; 从而形成第一和第二膜的堆叠; 并对第一和第二膜的堆叠进行热处理,以在基板上形成钙钛矿型超导体膜。

    Production and use of coolant in cryogenic devices
    2.
    发明公开
    Production and use of coolant in cryogenic devices 失效
    Herstellung und Verwendung einesKühlmittelsfürKryogenvorrichtungen。

    公开(公告)号:EP0369827A1

    公开(公告)日:1990-05-23

    申请号:EP89311971.9

    申请日:1989-11-20

    申请人: FUJITSU LIMITED

    IPC分类号: C09K5/06 H01L23/44

    摘要: A coolant for use in cryogenic devices of closed cycle system which comprises a mixture of a liquid nitrogen and a fluorocarbon of the formula: CnF 2n+2 , wherein n is an integer of 2 to 4. The coolant, when used to cool heat generating semiconductor devices and other devices to a cryogenic temperature, exhibits an increased heat flux and thus an increased cooling capability, in addition allows a simple and small structure of the cooling system, and a prevention of environmental pollution.

    摘要翻译: 一种用于封闭循环系统的低温装置的冷却剂,其包含液态氮和下式的碳氟化合物的混合物:CnF2n + 2,其中n为2至4的整数。冷却剂用于冷却发热半导体 装置和其他装置到低温,表现出增加的热通量,从而增加冷却能力,另外允许冷却系统的简单和小的结构,以及防止环境污染。

    Process for preparing superconductors
    3.
    发明公开
    Process for preparing superconductors 失效
    Verfahren zur Herstellung von Supraleitern。

    公开(公告)号:EP0352996A2

    公开(公告)日:1990-01-31

    申请号:EP89307481.5

    申请日:1989-07-24

    申请人: FUJITSU LIMITED

    IPC分类号: C04B35/00 H01L39/24

    摘要: Bi-Pb-Sr-Ca-Cu-O system and Tl-Pb-Ba-Ca-Cu-O system superconductor having a high Tc phase (about 110 K and about 125 K, respectively, or more) in a high proportion are obtained by adding a calcium compound which forms CaO and a liquid phase at a temperature for firing the superconductors, e.g., Ca₂PbO x (x = 3 or 4); or by starting from a composition represented by the formula: Bi₂Pb (n-1)/2 Sr₂Ca n Cu n+1 O b′ , or
    Tℓ₂Pb (n-1)/2 Ba₂Ca n Cu n+1 O b where 2 ≦ n ≦ 10, 9 ≦ b ≦ 40.5, i.e., at a ratio of Ca:Pb = 2:1.

    摘要翻译: 具有高Tc相(约110K和约125K或更高)的高比例的Bi-Pb-Sr-Ca-Cu-O系和Tl-Pb-Ba-Ca-Cu-O系超导体是 通过在超导体烧制的温度例如Ca2PbOx(x = 3或4)中加入形成CaO和液相的钙化合物获得; 或者由下式表示的组合:Bi2Pb(n-1)/ 2Sr2CanCun + 10b min,或T12Pb(n-1)/ 2Ba2CanCun + 10b,其中2≤n≤10,9, = b <= 40.5,即以Ca:Pb = 2:1的比例。