Microstructures of superconducting joint between GdBa2Cu3Oy-coated conductors via additionally deposited precursor films

Tomohiro Miyajima, Ryo Teranishi, Syotaro Yasuyama, Yukio Sato, Kenji Kaneko, Takuya Maeda, Minoru Ochi, Kazuya Hiramatsu, Miyuki Nakamura, Valery Petrykin, Sergey Lee, Tatsunori Okada, Satoshi Awaji

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Superconducting joints have been demanded to lengthen REBa2Cu3O y -coated conductors for electrical power applications. In this study, we propose a new joint method for GdBa2Cu3O y -coated conductors via crystallizing precursor films additionally deposited on the conductors. Two GdBa2Cu3O y -coated conductors with precursor films were placed in a face-to-face manner in a furnace, then they were crystallized under mechanical pressure to joint them. A superconducting joint was achieved with a high critical temperature of 90.8 K. Microstructural observation by a transmission electron microscope revealed that there were only a few pores at the joint boundary without a secondary phase having c-axis-oriented GdBa2Cu3O y

Original languageEnglish
Article number050913
JournalJapanese Journal of Applied Physics
Volume58
Issue number5
DOIs
Publication statusPublished - Jan 1 2019

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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