Oriented Structure and Supereonducting Properties in Dense Y_1Ba_2Cu_3 Oxides Prepared by Press Forging
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概要
- 論文の詳細を見る
Dense Y_1Ba_2Cu_3 oxides with a highly oriented structure were prepared by press forging at temperatures above 1248 K in air. The c plane of the oxides is preferentially oriented perpendicular to the pressing direction, and the orientation factor (F) and density attained by press forging at 1273 K are 0.58 and 6.19 Mg/m^3, respectively. Subsequent annealing treatment for 36 h at 1173 K and for 200 h at 773 K in O_2 for the press forged oxides causes a high-T_c superconductivity with T_c of 90 K and J_c o f 800 A/cm^2 at 77 K in zero field. The J_c value seems to be attributed to the highly oriented and densified structure.
- 社団法人応用物理学会の論文
- 1990-10-20
著者
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Masumoto Tsuyoshi
Institute For Materials Research Tohoku University
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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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INOUE Akishisa
Institute for Materials Research, Tohoku University
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Inoue Akishisa
Institute For Materials Research Tohoku University
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Matsuzaki Kunio
Institute For Materials Research
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