公开(公告)号：US5670457A

公开(公告)日：1997-09-23

申请号：US356640

申请日：1994-12-15

Applicant: Seiji Adachi ,  Changqin Jin ,  Xiao-Jing Wu ,  Hisao Yamauchi ,  Shoji Tanaka

Inventor： Seiji Adachi ,  Changqin Jin ,  Xiao-Jing Wu ,  Hisao Yamauchi ,  Shoji Tanaka

IPC: C01G1/00 ,  C01G3/00 ,  H01B12/00 ,  H01B13/00 ,  H01L39/12 ,  C04B35/01 ,  C04B35/03

CPC classification number: H01L39/126 ,  Y10S505/776 ,  Y10S505/778

Abstract: An oxide superconductor composed of Cu, O and at least one of Ba, Sr and Ca and including alternately arranged at least one oxygen-deficient perovskite structure section and at least one infinite layer structure section, wherein the perovskite structure section consists of two first atomic layers and a second atomic layer sandwiched between the first layers, and wherein the infinite layer structure section consists of alternately arranged, third and fourth atomic layers. Each of the first layers consists of O and an element M.sup.1 selected from Ba, Sr and Ca and has an atomic ratio O/M.sup.1 of 1 or less, while the second layer consists of O and Cu and has an atomic ratio O/Cu of 2 or less. Each of the third layers consists of O and Cu and has an atomic ratio O/Cu of 2, while each of the fourth layers consists of an element M.sup.2 selected from Ba, Sr and Ca. A superconductor having a superconducting critical temperature of over 100 K. may be produced by heat treatment at 800.degree.-1,200.degree.C. under a super-high pressure of 20,000-80,000 atm.

Abstract translation: 由Cu，O和Ba，Sr和Ca中的至少一种构成的氧化物超导体，包括交替排列至少一个缺氧钙钛矿结构部分和至少一个无限层结构部分，其中钙钛矿结构部分由两个第一原子 层和夹在第一层之间的第二原子层，并且其中无限层结构部分由交替排列的第三和第四原子层组成。 每个第一层由O和选自Ba，Sr和Ca的元素M1组成，并且具有1或更小的原子比O / M1，而第二层由O和Cu组成，并且原子比O / Cu为 2以下。 每个第三层由O和Cu组成，并且原子比O / Cu为2，而每个第四层由选自Ba，Sr和Ca的元素M2组成。 具有超导临界温度超过100K的超导体可以通过在20000-80,000大气压的超高压下在800-1200℃下进行热处理来制备。

公开(公告)号：US5716907A

公开(公告)日：1998-02-10

申请号：US618827

申请日：1996-03-20

Applicant: Tadashi Tatsuki ,  Seiji Adachi ,  Makoto Itoh ,  Toshiyuki Tamura ,  Changqin Jin ,  Xiao-Jing Wu ,  Hisao Yamauchi

Inventor： Tadashi Tatsuki ,  Seiji Adachi ,  Makoto Itoh ,  Toshiyuki Tamura ,  Changqin Jin ,  Xiao-Jing Wu ,  Hisao Yamauchi

IPC: C01G1/00 ,  C01G3/00 ,  C04B35/45 ,  C04B35/645 ,  H01B12/00 ,  H01B13/00 ,  H01L39/24 ,  C04B35/01

CPC classification number: C04B35/45 ,  C04B35/645 ,  H01L39/2419 ,  Y10S505/776 ,  Y10S505/779

Abstract: The present invention is an oxide superconductor containing alkaline earth metal M (where M is at least one element of Ba, Sr, and Ca) and having a crystalline structure in which a portion based on two rock-salt structures including the alkaline earth metal M, oxygen, and chlorine, and a 2n-1 piece of infinite layer structure portion are alternately layered on each other, said 2n-1 piece of infinite layer structure portion having an atom layer including copper atoms and oxygen atoms in a ratio of 1 to 2 and of an atom layer including only M atoms layered on each other (where n is an integer of 1 or more and where copper atoms and oxygen atom are contained in a ratio of 1 to 2 if n is 1).

Abstract translation: 本发明是含有碱土金属M（其中M是Ba，Sr和Ca的至少一种元素）的氧化物超导体，具有结晶结构，其中基于包括碱土金属M的两种岩盐结构的部分 ，氧和氯，并且2n-1个无限层结构部分彼此交替层叠，所述2n-1个无限层结构部分具有包含铜原子和氧原子的原子层，比例为1〜 2和仅包含彼此层叠的M原子的原子层（n为1以上的整数，如果n为1，则以1〜2的比例含有铜原子和氧原子）。

公开(公告)号：US5705457A

公开(公告)日：1998-01-06

申请号：US525912

申请日：1995-09-08

Applicant: Toshiyuki Tamura ,  Seiji Adachi ,  Xiao-Jing Wu ,  Hisao Yamauchi

Inventor： Toshiyuki Tamura ,  Seiji Adachi ,  Xiao-Jing Wu ,  Hisao Yamauchi

IPC: C01G1/00 ,  C01G21/00 ,  C04B35/45 ,  C04B35/645 ,  H01B13/00 ,  H01L39/24 ,  H01L39/12

CPC classification number: C04B35/45 ,  C04B35/645 ,  Y10S505/742 ,  Y10S505/776

Abstract: The present invention provides an oxide superconductor which is expressed in the composition formula (Pb.sub.1-x-y M.sub.x (A1).sub.y)(A2).sub.2 (A3).sub.n-1 (Cu).sub.n (O).sub.2n+3+z (wherein 0.ltoreq.0.6, 0.ltoreq.y.ltoreq.0.6, x+y.ltoreq.0.6, n denotes integers of 1 or more, -0.6.ltoreq.z.ltoreq.0.5, M denotes Cu or Cd, and A1, A2 and A3 denote at least one element of Ba, Sr, and Ca, respectively) and which has a crystal structure stacking rock salt structure based portions and infinite layer structure portions, wherein the rock salt structure based portion has a structure that an atoms layer having 0.5-1.5 oxygen atoms, in case the total atoms number of Pb, M and A1 is one, and an atoms layer having one or less oxygen atoms per one A2 atom, are stacked and the infinite layer structure portion has a structure that an atoms layer having 2 oxygen atoms per one Cu atom and an atoms layer of A3 atoms only, are stacked. Further, the present invention provides a method for manufacturing the above oxide superconductor by heat-treating a raw material of oxide superconductor at a temperature of 800.degree.-1200.degree. C. under superhigh pressure of 2-8 GPa.

Abstract translation: 本发明提供以组成式（Pb1-x-yMx（A1）y）（A2）2（A3）n-1（Cu）n（O）2n + 3 + z（其中0）表示的氧化物超导体 n = 0.6，0≤y≤0.6，x + y <0.6，n表示1以上的整数，-0.6≤Z≤0.5，M表示Cu或Cd，A1表示 ，A2和A3分别表示Ba，Sr和Ca中的至少一种元素），其具有层叠基于盐岩结构的部分和无限层结构部分的晶体结构，其中岩盐结构基部分具有以下结构：原子 在氧原子数为0.5-1.5的情况下，在Pb，M和Al的总原子数为1的情况下，每个A2原子具有一个或多个氧原子的原子层被堆叠，并且无限层结构部分具有以下结构： 每个Cu原子具有2个氧原子并且仅具有A3原子的原子层的原子层被堆叠。 此外，本发明提供一种通过在800〜1200℃的温度下在2-8GPa的超高压下热处理氧化物超导体的原料来制造上述氧化物超导体的方法。