公开(公告)号：EP0486698B1

公开(公告)日：1995-11-08

申请号：EP91910631.0

申请日：1991-06-07

申请人： NIPPON STEEL CORPORATION

发明人： MORITA, Mitsuru, Nippon Steel Corporation ,  KIMURA Keiichi, Nippon Steel Corporation ,  MIYAMOTO, Katsuyoshi, Nippon Steel Corporation ,  SAWANO, Kiyoshi, Nippon Steel Corporation ,  TAKEBAYASHI, Seiki, Nippon Steel Corporation ,  TANAKA, Masamoto, Nippon Steel Corporation

IPC分类号： C30B11/00 ,  C04B35/00 ,  C30B29/22 ,  H01L39/12

CPC分类号： H01L39/2419 ,  C04B35/4508 ,  C04B35/653 ,  C30B11/00 ,  C30B29/225 ,  H01L39/128 ,  Y10S505/778 ,  Y10S505/779 ,  Y10S505/78 ,  Y10S505/785

摘要： A superconductor comprising a composite oxide of rare earth elements (RE), barium and copper, wherein RE2BaCuO5 phases (211 phases) are finely dispersed in a single crystal REBa2Cu3O7-x phase (123 phase) and the 123 phase is composed of a multiplicity of layers corresponding to the composition of the RE arranged in the order of the 123 phase forming temperature; and a process for producing the superconductor which comprises forming a layer from a powdery mixture of oxides of the RE, barium and copper and also layers from other powdery mixtures of oxides of RE, barium and copper corresponding to other compositions of RE having different 123 phase forming temperatures from that of the abovementioned composition of RE to give a multilayered structure wherein the multiplicity of the layers are laminated in the ascending or descending order of the 123 phase forming temperatures thereof, press forming the laminate into a precursor, placing the precursor on a support material in such a manner that the layer having the highest 123 phase forming temperature among them forms the outermost layer, bringing it into a semi-molten state by heating in a temperature range where solid and liquid are coexistent, and cooling it slowly in the 123 phase forming temperature range, optionally after seeding with seed crystals, to grow 123 phase crystals at a rate of 5 mm/hr or less.

公开(公告)号：EP0486698A1

公开(公告)日：1992-05-27

申请号：EP91910631.0

申请日：1991-06-07

申请人： NIPPON STEEL CORPORATION

发明人： MORITA, Mitsuru, Nippon Steel Corporation ,  KIMURA Keiichi, Nippon Steel Corporation ,  MIYAMOTO, Katsuyoshi, Nippon Steel Corporation ,  SAWANO, Kiyoshi, Nippon Steel Corporation ,  TAKEBAYASHI, Seiki, Nippon Steel Corporation ,  TANAKA, Masamoto, Nippon Steel Corporation

IPC分类号： C30B11/00 ,  C04B35/00 ,  C30B29/22 ,  H01L39/12

CPC分类号： H01L39/2419 ,  C04B35/4508 ,  C04B35/653 ,  C30B11/00 ,  C30B29/225 ,  H01L39/128 ,  Y10S505/778 ,  Y10S505/779 ,  Y10S505/78 ,  Y10S505/785

摘要： A superconductor comprising a composite oxide of rare earth elements (RE), barium and copper, wherein RE₂BaCuO₅ phases (211 phases) are finely dispersed in a single crystal REBa₂Cu₃O 7-x phase (123 phase) and the 123 phase is composed of a multiplicity of layers corresponding to the composition of the RE arranged in the order of the 123 phase forming temperature; and a process for producing the superconductor which comprises forming a layer from a powdery mixture of oxides of the RE, barium and copper and also layers from other powdery mixtures of oxides of RE, barium and copper corresponding to other compositions of RE having different 123 phase forming temperatures from that of the abovementioned composition of RE to give a multilayered structure wherein the multiplicity of the layers are laminated in the ascending or descending order of the 123 phase forming temperatures thereof, press forming the laminate into a precursor, placing the precursor on a support material in such a manner that the layer having the highest 123 phase forming temperature among them forms the outermost layer, bringing it into a semi-molten state by heating in a temperature range where solid and liquid are coexistent, and cooling it slowly in the 123 phase forming temperature range, optionally after seeding with seed crystals, to grow 123 phase crystals at a rate of 5 mm/hr or less.

摘要翻译： 包含稀土元素（RE），钡和铜的复合氧化物的超导体，其中RE2BaCuO5相（211相）细分散在单晶REBa2Cu3O7-x相（123相）中，123相由多种 对应于以123相形成温度的顺序排列的RE的组成的层; 以及制造超导体的方法，其包括从RE，钡和铜的氧化物的粉末状混合物形成层，以及从RE，钡和铜的氧化物的其它粉末混合物形成层，其对应于具有不同的123相的RE的其它组成 形成温度从上述RE组合物的温度，得到多层结构，其中多个层以123相形成温度的升序或降序层叠，将层压体压制成前体，将前体放置在 支撑材料，使得其中具有最高的123相形成温度的层形成最外层，通过在固体和液体共存的温度范围内加热使其进入半熔融状态，并在 123相形成温度范围，任选地在用晶种接种后，以5的速率生长123相晶体 mm / hr以下。