Bi-Sr-Ca-Cu-O Superconducting Oxides Synthesized from Different Diffusion Couples
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概要
- 論文の詳細を見る
Thick Bi-Sr-Ca-Cu-O(BSCCO) layers have been synthesized by a reaction diffusion between a Sr-base oxide substrate and a Bi-base oxide coating layer. Effects of the composition of diffusion couples on superconducting properties and structures of resulting reaction layers have been studied. The most favorable diffusion couple to form a uniform 2212 layer was 2001 (Bi_2CuO_4) and 0212 (Sr_2CaCu_2O_5). The Pb substitution for Bi in the coating layer produced a thick 2223 layer with no crystal orientation, unlike the 2212 reaction layer which showed a strong a-axis orientation. The Li substitution for Bi significantly enhanced the reaction diffusion, and an offset T_c of 83 K was obtained after a heat treatment at 800℃ for 10 min. A study was also performed on the powder-diffusion process in which powders of a Sr-base oxide and a Bi-base oxide were mixed and sintered.
- 社団法人応用物理学会の論文
- 1991-04-15
著者
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WATANABE Takayuki
Department of Innovative and Engineered Materials, Interdisciplinary Graduate School, Tokyo Institut
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INOUE Takayuki
Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University
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Tachikawa Kyoji
Department Of Materials Science School Of Engineering Tokai University
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Tachikawa Kyoji
Department Of Materials Technology Faculty Of Engineering Tokai University
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Tachikawa Kyoji
Department Of Material Science Tokai University
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SHIRASU Kenji
Department of Materials Technology, Faculty of Engineering, Tokai University
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Watanabe Takayuki
Department Of Innovative And Engineered Materials Tokyo Institute Of Technology
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Shirasu Kenji
Department Of Materials Technology Faculty Of Engineering Tokai University
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Inoue Takayuki
Department Of Applied Chemistry Graduate School Of Engineering Hiroshima University
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Watanabe Takayuki
Department Of Chemical Engineering Tokyo Institute Of Technology
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Inoue Takayuki
Department Of Materials Technology Faculty Of Engineering Tokai University
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Watanabe Takayuki
Department Of Materials Technology Faculty Of Engineering Tokai University
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Watanabe Takayuki
Department Of Biochemistry School Of Dentistry Hokkaido University
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