REBCO 高温超伝導線材の開発 —微細組織と臨界電流特性—

塩原 融; 中岡 晃一; 和泉 輝郎; 加藤 丈晴

doi:10.2320/jinstmet.JC201610

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REBCO 高温超伝導線材の開発

—微細組織と臨界電流特性—

塩原融, 中岡晃一, 和泉輝郎, 加藤丈晴

著者情報

キーワード: REBCO (REBa₂Cu₃O_6+δ) superconductor, second generation coated conductor, grain alignment, critical current density, critical current, depairing current density, flux pinning, intrinsic pinning center, artificial pinning center, transmission electron microscopy

ジャーナルフリー早期公開

論文ID: JC201610

DOI https://doi.org/10.2320/jinstmet.JC201610

この記事には本公開記事があります。

The final version of this article is now available: Vol. 80 (2016), No. 7 pp. 406-419

詳細

抄録

Since the discovery of the YBCO superconductor, many efforts have been made to develop useful superconductive wire and tape for many electrical power applications. Especially, the second generation coated conductors using REBaCuO (RE: rare earth element, Y, Gd, Sm, Nd, Eu etc) compounds have high expectations because of its high critical current density at the liquid nitrogen temperature and under self fields as well as high magnetic fields. Recently, several processes have been successfully developed to introduce effective magnetic flux pinning centers into the REBCO layer in order to enhance the in-field critical current densities. This paper reviews the present status of the research and development about the improvement of critical currents in considerations of nano-scale microstructure.

責任著者(Corresponding author)

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