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).

公开(公告)号：US5149683A

公开(公告)日：1992-09-22

申请号：US659637

申请日：1991-02-11

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

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

IPC分类号： C01G3/00 ,  C01G1/00 ,  C04B35/45 ,  H01B12/00 ,  H01B13/00 ,  H01L39/12 ,  H01L39/24

CPC分类号： C04B35/4504 ,  H01L39/126 ,  H01L39/2422 ,  Y10S505/779 ,  Y10S505/78

摘要： A method for producing an oxide superconductor formed according to a chemical composition formula (R.sub.1-x Ca.sub.x)(Ba.sub.1-y Sr.sub.y).sub.2 Cu.sub.4 O.sub.8 and having a transition temperature of 77K or above, comprising the step of causing a reaction between (R.sub.1-x Ca.sub.x)(Ba.sub.1-y Sr.sub.y).sub.2 Cu.sub.3 O.sub.7-z and a Cu material such as CuO, wherein R stands for one or more rare earth elements selected from the group consisting of Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm and Yb, and wherein 0.01.ltoreq.x.ltoreq.0.25, 0.ltoreq.y.ltoreq.0.5, and 0.ltoreq.z.ltoreq.1. The advantage of this production method is that this production method does not require a hot static pressing process which takes a long time.

公开(公告)号：US5262393A

公开(公告)日：1993-11-16

申请号：US781315

申请日：1991-10-25

申请人： Takahiro Wada ,  Ataru Ichinose ,  Kazuyuki Hamada ,  Hisao Yamauchi ,  Shoji Tanaka

发明人： Takahiro Wada ,  Ataru Ichinose ,  Kazuyuki Hamada ,  Hisao Yamauchi ,  Shoji Tanaka

IPC分类号： C01G15/00 ,  C01G1/00 ,  C01G21/02 ,  C04B35/45 ,  H01B3/12 ,  H01B12/00 ,  H01L39/12 ,  C01F11/02 ,  C01F17/00 ,  C01G3/02

CPC分类号： C04B35/4504 ,  C04B35/4512 ,  C04B35/4517 ,  Y10S505/775 ,  Y10S505/776 ,  Y10S505/783

摘要： The present invention provides a layered copper oxide as an insulator for superconductor or as a superconductor, which has a chemical composition represented by the formula of (R,Ce).sub.3 Sr.sub.2 Cu.sub.2 (M,Cu)O.sub.11, wherein R is a rare earth element other than Ce and M is one or both of Pb and T1, and has a crystal structure comprising a (M,Cu)Sr.sub.2 (R,Ce)Cu.sub.2 O.sub.7 ; unit of a TlBa.sub.2 CaCu.sub.2 O.sub.7 (1-2-1-2)-type structure and a [(R,Ce)O.sub.2 ].sub.2 unit of a fluorite-type structure alternately put on each other, or a chemical composition represented by the formula of (R,Ce).sub.3 Sr.sub.2 Cu.sub.2 (M,Cu)O.sub.10+z, wherein R is a rare earth element other than Ce, M is one or both of Pb or Tl, and has a crystal structure comprising a (R,Ce)Sr.sub.2 Cu.sub.2 (Cu,M)O.sub.6+z unit of a YBa.sub.2 Cu.sub.3 O.sub.3 O.sub.6+.delta. -type structure and a [(R,Ce)O.sub.2 ].sub.2 unit of a fluorite-type structure alternately put on each other, wherein z is in the range of 0.ltoreq.z.ltoreq.2 and .delta. is in the range of 0.ltoreq..delta..ltoreq.1.

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。

公开(公告)号：US5169830A

公开(公告)日：1992-12-08

申请号：US567958

申请日：1990-08-15

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

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

IPC分类号： H01L39/12

CPC分类号： H01L39/126 ,  Y10S505/778

摘要： A superconductive material is disclosed which has the following composition:(R.sub.1-x Ca.sub.x)(Ba.sub.1-y La.sub.y).sub.2 Cu.sub.4 O.sub.8wherein R is at least one element selected from Y, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu, x is a number in the range of 0-0.3 and y is a number in the range of 0.001-0.3 with the proviso that y is not greater than 0.2 when x is not 0.

公开(公告)号：US5252544A

公开(公告)日：1993-10-12

申请号：US712264

申请日：1991-06-07

申请人： Toshihiko Maeda ,  Kazuhiro Sakuyama ,  Shin-ichi Koriyama ,  Ataru Ichinose ,  Hisao Yamauchi ,  Shoji Tanaka

发明人： Toshihiko Maeda ,  Kazuhiro Sakuyama ,  Shin-ichi Koriyama ,  Ataru Ichinose ,  Hisao Yamauchi ,  Shoji Tanaka

IPC分类号： C01G3/00 ,  C01G1/00 ,  C01G21/00 ,  C04B35/45 ,  H01B12/00 ,  H01L39/12 ,  C01F11/02 ,  C01F17/00 ,  C01G3/02

CPC分类号： H01L39/126 ,  C01G21/006 ,  C04B35/45 ,  C01P2002/30 ,  C01P2002/72 ,  C01P2002/77 ,  Y10S505/778 ,  Y10S505/779

摘要： An oxide superconductor which has a composition expressed by the following general formula and whose crystal structure is 1222-phase structure.Pb.sub.a (M.sub.1-x-y Ce.sub.x Sr.sub.y).sub.4 Cu.sub.3-a O.sub.z (I)(where M represents at least one element selected from the group consisting of Y, La, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, and Lu, and a, x, y, and z denote the numbers which satisfy 0.3.ltoreq.a.ltoreq.0.7, 0

公开(公告)号：US5407908A

公开(公告)日：1995-04-18

申请号：US91832

申请日：1993-07-13

申请人： Toshihiko Maeda ,  Kazuhiro Sakuyama ,  Shin-ichi Koriyama ,  Ataru Ichinose ,  Hisao Yamauchi ,  Shoji Tanaka

发明人： Toshihiko Maeda ,  Kazuhiro Sakuyama ,  Shin-ichi Koriyama ,  Ataru Ichinose ,  Hisao Yamauchi ,  Shoji Tanaka

IPC分类号： C01G3/00 ,  C01G1/00 ,  C01G21/00 ,  C04B35/45 ,  H01B12/00 ,  H01L39/12

CPC分类号： H01L39/126 ,  C01G21/006 ,  C04B35/45 ,  C01P2002/30 ,  C01P2002/72 ,  C01P2002/77 ,  Y10S505/778 ,  Y10S505/779

摘要： A method for manufacturing a Pb-based Cu oxide superconductor. The method includes the steps of mixing powders of a raw material containing at least Pb, Sr, Ce, M, where M is at least one element selected from the group consisting of Y, La, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, and Lu, and Cu in a proportion to have the composition of the formula (I),Pb.sub.a (M.sub.1-x-y Ce.sub.x Sr.sub.y).sub.4 Cu.sub.3-a O.sub.z(I)where M is at least one element selected from the group consisting of Y, La, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, and Lu, and a, x, y, and z denote the numbers which satisfy 0.3.ltoreq.a.ltoreq.0.7, 0

摘要翻译： 一种Pb系Cu氧化物超导体的制造方法。 该方法包括混合至少含有Pb，Sr，Ce，M的原料的粉末的步骤，其中M是选自Y，La，Nd，Sm，Eu，Gd，Tb， Dy，Ho，Er，Yb和Lu，以及具有式（I）的组成的比例的Pba（M1-x-yCexSry）4Cu3-aOz（I），其中M是选自 由Y，La，Nd，Sm，Eu，Gd，Tb，Dy，Ho，Er，Yb和Lu组成的组，a，x，y和z表示满足0.3 < = 0.7,0

公开(公告)号：US5446017A

公开(公告)日：1995-08-29

申请号：US45077

申请日：1993-04-12

申请人： Takeshi Sakurai ,  Nobuyuki Sugii ,  Seiji Adachi ,  Michiharu Ichikawa ,  Yuji Yaegashi ,  Hisao Yamauchi ,  Masahiko Shimada ,  Hirotsugu Takizawa

发明人： Takeshi Sakurai ,  Nobuyuki Sugii ,  Seiji Adachi ,  Michiharu Ichikawa ,  Yuji Yaegashi ,  Hisao Yamauchi ,  Masahiko Shimada ,  Hirotsugu Takizawa

IPC分类号： C01G1/00 ,  C01G3/00 ,  C04B35/00 ,  C04B35/45 ,  H01B12/06 ,  H01B13/00 ,  H01L39/12 ,  H01L39/24 ,  H01B12/00

CPC分类号： H01L39/126 ,  Y10S505/775 ,  Y10S505/776

摘要： A superconductive oxide material having an infinite layer structure and having the following formula:A.sub.p B.sub.q Cu.sub.2 O.sub.4.+-.rwherein A and B are different and each represent an element selected from lanthanoid elements and elements belonging to Groups IA, IIA and IIIA of the Periodic Table, p is between 0.9 and 1.1, q is between 0.9 and 1.1 and r is between 0 and 0.6. The oxide material has a crystal structure belonging to a tetragonal system of P4/mmm and 1-123 having the following lattice parameters:3.8.ANG..ltoreq.a.ltoreq.4.0.ANG.7.6.ANG..ltoreq.c.ltoreq.8.0.ANG.or to an orthorhombic system of Pmmm and I-47 having the following lattice parmeters:3.8.ANG..ltoreq.a.ltoreq.3.95.ANG.3.82.ANG..ltoreq.b.ltoreq.4.0.ANG.7.6.ANG..ltoreq.c.ltoreq.8.0.ANG..

摘要翻译： 具有无限层结构并具有下式的超导氧化物材料：ApBqCu2O4 +/- r其中A和B不同，并且各自表示选自镧系元素和元素周期表中IA，IIA和IIIA族的元素，p 在0.9和1.1之间，q在0.9和1.1之间，r在0和0.6之间。 氧化物材料具有属于P4 / mmm和1-123的四方晶系的晶体结构，具有以下晶格参数：3.8 ANGSTROM

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。

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