High-T_c Superconductor Prepared by Oxidization of a Melt-Spun Eu_1Ba_2Cu_3 Alloy Ribbon
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概要
- 論文の詳細を見る
An Eu_1Ba_2Cu_3 alloy ribbon with a nonequilibrium structure including an amorphous phase was prepared by melt-spinning. Heating of the alloy ribbon in air resulted in the structural change to a crystalline metallic phase at about 475 K, followed by the oxide formation of Eu_1Ba_2Cu_3O_<6.5-6.7> at temperatures above about 555 K. The Eu_1Ba_2Cu_3O_<6.7> prepared by oxidization of the melt-spun alloy ribbon was found to exhibit high-T_c superconductivity with onset at 93 K and zero resistance at 87 K, even though the J_c value at 4.2 K was as low as about 20 A/ cm^2 in the absence of an applied field and 1.3 A/cm^2 at H=7.5 T.
- 社団法人応用物理学会の論文
- 1987-10-20
著者
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Matsuzaki K
Institute For Materials Research Tohoku University
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Inoue Akihisa
Institute For Materials Research
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MASUMOTO Tsuyoshi
The Research Institute of Electrical and Magnetic Materials
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Kimura Hisamichi
Institute For Material Research Tohoku University
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Moroishi K
Hoya Corp. Tokyo Jpn
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Masumoto Tsuyoshi
Institute For Materials Research
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Matsuzaki Kunio
Institute For Materials Research Tohoku University
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Matsuzaki Kunio
Institute For Materials Research
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Inoue Akihisa
Institiute For Materials Resarch Tohoku University
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