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    High temperature oxide superconductor
    4.
    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

    申请人： Takahiro Wada ,  Shin-ichi Koriyama ,  Takeshi Sakurai ,  Nobuo Suzuki ,  Takayuki Miyatake ,  Hisao Yamauchi ,  Naoki Koshizuka ,  Shoji Tanaka

    发明人： Takahiro Wada ,  Shin-ichi Koriyama ,  Takeshi Sakurai ,  Nobuo Suzuki ,  Takayuki Miyatake ,  Hisao Yamauchi ,  Naoki Koshizuka ,  Shoji Tanaka

    IPC分类号： C01G3/00 ,  C04B35/45 ,  H01L39/12 ,  H01B12/00

    CPC分类号： C01G3/006 ,  C04B35/4504 ,  H01L39/126 ,  C01P2002/72 ,  C01P2002/77 ,  C01P2002/88 ,  C01P2004/80 ,  C01P2006/14 ,  Y10S505/779 ,  Y10S505/78

    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。

    Method of preparing Pb-Sr-Ca-Ln-Ca-O metal oxide superconductor
    5.
    发明授权
    Method of preparing Pb-Sr-Ca-Ln-Ca-O metal oxide superconductor 失效
    制备Pb-Sr-Ca-Ln-Ca-O金属氧化物超导体的方法

    公开(公告)号：US5244872A

    公开(公告)日：1993-09-14

    申请号：US785326

    申请日：1991-11-01

    申请人： Takaaki Ikemachi ,  Takashi Kawano ,  Shin-ichi Koriyama ,  Hisao Yamauchi

    发明人： Takaaki Ikemachi ,  Takashi Kawano ,  Shin-ichi Koriyama ,  Hisao Yamauchi

    IPC分类号： C04B35/00 ,  C01B13/18 ,  C01G1/00 ,  C01G21/00 ,  C04B35/45 ,  H01B12/00 ,  H01B13/00 ,  H01L39/12 ,  H01L39/24

    CPC分类号： C01G21/006 ,  C01B13/185 ,  C04B35/4504 ,  C01P2006/40 ,  Y10S505/725 ,  Y10S505/738

    摘要： An oxide superconductor having the following formula:Pb.sub.2 Sr.sub.2 Ca.sub.1-p Ln.sub.p Cu.sub.3 O.sub.q orPb.sub.1-x Cu.sub.x Sr.sub.2 Ca.sub.1-y Ln.sub.y Cu.sub.2 O.sub.zwherein Ln represents a rare earth element, p is 0.3-0.7, q is 7.8-8.2, x is 0.2-0.5, y is 0.3-0.7 and z is 6.8-7.2 is prepared using a coprecipitation method. An acetic acid solution of carbonates, acetates or nitrates of Pb, Sr, Ca, Cu and Ln is mixed with an aqueous solution of oxalic or tartaric acid, or a lower alkyl ester thereof. The mixture is reacted to precipitate the Pb, Sr, Ca, Cu and Ln as oxalates or tartarates and the precipitates are dried and sintered to obtain the oxide superconductor.

    摘要翻译： 具有下式的氧化物超导体：Pb2Sr2Ca1-pLnpCu3Oq或Pb1-xCuxSr2Ca1-yLnyCu2Oz其中Ln表示稀土元素，p为0.3-0.7，q为7.8-8.2，x为0.2-0.5，y为0.3-0.7，z 使用共沉淀法制备6.8-7.2。 将Pb，Sr，Ca，Cu和Ln的碳酸盐，乙酸盐或硝酸盐的乙酸溶液与草酸或酒石酸或其低级烷基酯的水溶液混合。 使混合物反应，以草酸盐或酒石酸盐的形式沉淀出Pb，Sr，Ca，Cu和Ln，并将沉淀物干燥并烧结，得到氧化物超导体。

    Nitrogen oxide detecting sensor and method of manufacturing the same
    6.
    发明授权
    Nitrogen oxide detecting sensor and method of manufacturing the same 失效
    氮氧化物检测传感器及其制造方法

    公开(公告)号：US5863503A

    公开(公告)日：1999-01-26

    申请号：US626007

    申请日：1996-04-01

    申请人： Shuzo Kudo ,  Hisao Ohnishi ,  Masamichi Ipponmatsu ,  Shoji Tanaka ,  Hisao Yamauchi ,  Satoshi Takano ,  Mitsunobu Wakata

    发明人： Shuzo Kudo ,  Hisao Ohnishi ,  Masamichi Ipponmatsu ,  Shoji Tanaka ,  Hisao Yamauchi ,  Satoshi Takano ,  Mitsunobu Wakata

    IPC分类号： G01N27/12 ,  G01N33/00 ,  G01N27/04

    CPC分类号： G01N33/0037 ,  G01N27/12 ,  Y10T436/177692 ,  Y10T436/178459 ,  Y10T436/179228

    摘要： A nitrogen oxide detecting sensor, according to the present invention, incorporates a gas detecting portion including, as a main component thereof, an oxide compound having electric conductivity or semiconductivity, the oxide compound having a crystal structure of 2212 phase and expressed generally as: Bi.sub.2 Sr.sub.2 (Ca.sub.1-x Y.sub.x)Cu.sub.2 O.sub.8.+-..delta. where 0.6.ltoreq.x 88.1%(b) {.SIGMA. I�2212!+.SIGMA. I�2201!}/.SIGMA. I�T!>94.8%(c) {.SIGMA. I�2212!+.SIGMA. I�Y.sub.2 O.sub.3 !} .SIGMA. I�T!>88.1%(d) {.SIGMA. I�2212!+.SIGMA. I�(Bi, Ca) O!}/.SIGMA. I�T! >88.8%where .SIGMA. I�2201! is a sum of diffraction peak intensity values based on the 2201 phase; .SIGMA. I�Y.sub.2 O.sub.3 ! is a sum of diffraction peak intensity values based on Y.sub.2 O.sub.3 ; .SIGMA. I�(Bi, Ca)O! is a sum of diffraction peak intensity values based on an oxide including one or both of Bi and Ca and excluding any other metal; and .SIGMA. I�T! is a sum of diffraction peak intensity values of an oxide including at least one of Bi, Sr, Ca, Y and Cu.

    摘要翻译： 根据本发明的氮氧化物检测传感器包括气体检测部分，其包括作为其主要成分的具有导电性或半导电性的氧化物化合物，所述氧化物化合物具有2212相的晶体结构，并且通常表示为：Bi 2 Sr 2 （Ca1-x Yx）Cu2 O8 +/- delta，其中0.6 88.1％（b）{SIGMA I [2212] + SIGMA I [220]} / SIGMA I [T]> 94.8％（c） （SIGMA I [2212] + SIGMA I [Y 2 O 3]} SIGMA I [T]> 88.1％（d）{SIGMA I [2212] + SIGMA I [（Bi，Ca）O]} / SIGMA I [T]> 88.8 ％，其中SIGMA I是基于2201相的衍射峰强度值的总和; SIGMA I [Y2O3]是基于Y2O3的衍射峰强度值的总和; SIGMA I [（Bi，Ca）O]是基于包含Bi和Ca中的一种或两种并且不包括任何其它金属的氧化物的衍射峰强度值的总和; 并且SIGMA I [T]是包括Bi，Sr，Ca，Y和Cu中的至少一种的氧化物的衍射峰强度值的总和。

    Method of preparing oxide superconductive material
    7.
    发明授权
    Method of preparing oxide superconductive material 失效
    制备氧化物超导材料的方法

    公开(公告)号：US5840659A

    公开(公告)日：1998-11-24

    申请号：US818368

    申请日：1997-03-14

    申请人： Tetsuyuki Kaneko ,  Kazuyuki Hamada ,  Hisao Yamauchi ,  Seiji Adachi ,  Shoji Tanaka

    发明人： Tetsuyuki Kaneko ,  Kazuyuki Hamada ,  Hisao Yamauchi ,  Seiji Adachi ,  Shoji Tanaka

    IPC分类号： C01G1/00 ,  C01G15/00 ,  C04B35/00 ,  C04B35/45 ,  H01B12/00 ,  H01B13/00 ,  H01L39/12 ,  H01L39/24 ,  A23G1/00 ,  A23G3/30 ,  A23L1/10 ,  A23L1/522

    CPC分类号： C04B35/4512 ,  H01L39/126

    摘要： In order to provide a Tl--Ba--Ca--Cu--O superconductive material which can obtain a stable superconducting state and a method of preparing the same, the oxide superconductive material is expressed in the following composition formula: Tl.sub.x Ba.sub.2 Ca.sub.y Cu.sub.3 O.sub.z where x, y and z are in relations satisfying 1.5.ltoreq.x.ltoreq.2.0, 2.0.ltoreq.y.ltoreq.2.5, x+y=4.0 and 9.0.ltoreq.z.ltoreq.11.0, and comprises tetragonal system superconducting phases having lattice constants of a=0.385 to 0.386 nm and c longer than 3.575 nm, to exhibit zero resistance under a temperature of at least 125 K, while the method comprises a step of mixing powder raw materials in blending ratios for satisfying the above composition formula, a step of sintering the as-formed mixed powder in an oxygen jet or in the atmosphere to obtain a sintered body, and a step of annealing the sintered body in a closed atmosphere at 700.degree. to 800.degree. C. for at least 10 hours.

    摘要翻译： 为了提供可以获得稳定的超导状态的Tl-Ba-Ca-Cu-O超导材料及其制备方法，氧化物超导材料以下列组成式表示：其中x，y和z分别为 在满足1.5

    Oxide superconductor and process of producing the same
    8.
    发明授权
    Oxide superconductor and process of producing the same 失效
    氧化物超导体及其制造方法

    公开(公告)号：US5776862A

    公开(公告)日：1998-07-07

    申请号：US684985

    申请日：1996-07-22

    申请人： Ryo Usami ,  Kazuyuki Isawa ,  Hiroshi Kubota ,  Roman Puzniak ,  Hisao Yamauchi ,  Shoji Tanaka

    发明人： Ryo Usami ,  Kazuyuki Isawa ,  Hiroshi Kubota ,  Roman Puzniak ,  Hisao Yamauchi ,  Shoji Tanaka

    IPC分类号： C04B35/45 ,  C01G1/00 ,  C01G13/00 ,  H01B12/00 ,  H01B13/00 ,  H01L39/12 ,  H01L39/24

    CPC分类号： H01L39/2419 ,  H01L39/126 ,  Y10S505/742 ,  Y10S505/782

    摘要： The hole density of an oxide superconductor having holes as carriers is higher than the hole density to bring the highest value of the superconductivity critical temperature Tc thereof, and it can be made higher than the optimal density to bring the highest Tc value by treating the oxide superconductor with heat in an oxidizing gas atmosphere, or by replacing positive ions constituting the oxide superconductor except for copper with ions of a low valence number. Accordingly, it is possible to substantially reduce the rate of decrease of the critical current density owing to an applied magnetic field when the magnetic field is applied parallel to the crystal c axis, and to allow a current conductor produced by using the oxide superconductor to have high critical current density.

    摘要翻译： 具有空穴作为载体的氧化物超导体的空穴密度高于空穴密度以达到其超导临界温度Tc的最高值，并且可以使其高于通过处理氧化物以获得最高Tc值的最佳密度 在氧化气体气氛中具有热的超导体，或者通过用低价数离子替代构成除铜以外的氧化物超导体的正离子。 因此，当平行于晶体c轴施加磁场时，由于所施加的磁场，可以显着降低临界电流密度的降低率，并且允许通过使用氧化物超导体产生的电流导体具有 高临界电流密度。

    Oxide superconductors and method for producing same
    10.
    发明授权
    Oxide superconductors and method for producing same 失效
    氧化物超导体及其制造方法

    公开(公告)号：US5217945A

    公开(公告)日：1993-06-08

    申请号：US754996

    申请日：1991-09-05

    申请人： Takahiro Wada ,  Yuji Yaegashi ,  Ataru Ichinose ,  Nobuo Suzuki ,  Hisao Yamauchi ,  Shoji Tanaka

    发明人： Takahiro Wada ,  Yuji Yaegashi ,  Ataru Ichinose ,  Nobuo Suzuki ,  Hisao Yamauchi ,  Shoji Tanaka

    IPC分类号： C04B35/00 ,  C01G1/00 ,  C01G3/00 ,  C04B35/45 ,  H01B12/00 ,  H01B13/00 ,  H01L39/24

    CPC分类号： C04B35/4504 ,  H01L39/2419 ,  Y10S505/779 ,  Y10S505/78

    摘要： The present invention provides an oxide superconductor which has a relatively high transition temperature T.sub.c. This superconductor has the chemical formula (R.sub.1-x Ca.sub.x)(Ba.sub.1-y Sr.sub.y).sub.2 Cu.sub.3 O.sub.7-z wherein R is at least one rare earth element selected from the group consisting of Tm, Yb and Lu, x is with in the range of 0.1.ltoreq..times.0.5, y is within the range of 0.1.ltoreq. y .ltoreq.0.4 and z is within the range of 0.05 .ltoreq. z .ltoreq.(x/2+0.5). The invention further provides a method for producing the oxide superconductor which comprises firing a composition of the formula (R.sub.1-x Ca.sub.x)(Ba.sub.1-y Sr.sub.y).sub.2 Cu.sub.3 O.sub.7-z wherein R is at least one rare earth element selected from the group consisting of Tm, Yb and Lu, x is within the range of 0.1 .ltoreq..times..ltoreq.0.5 and y is within the range of 0.1 .ltoreq.y .ltoreq.0.4 at a temperature of from 750.degree. C. to the melting temperature of the composition under an oxygen partial pressure P(O.sub.2) of 0.001 atm .ltoreq.P(O.sub.2) .ltoreq.0.2 atm and then heat treating the composition to adjust the oxygen loss z to 0.05 .ltoreq.z .ltoreq.(x/2+0.5).