Superconducting critical current density enhanced to 285 A cm-2 for Sr2VFeAsO3-δ tapes fabricated by ex situ powder-in-tube process

Suguru Iwasaki, Ryo Matsumoto, Shintaro Adachi, Yoshihiko Takano, Yoichi Kamihara

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Superconducting critical current density (J c) at 4.2 K for superconducting Sr2VFeAsO3-δ tape fabricated by powder-in-tube process was enhanced up to 285 A cm-2. Cross-sectional SEM images for superconducting Sr2VFeAsO3-δ wire/tapes indicated that void fraction f void was reduced from 12.8% for the round wire to ∼2.5% for the tapes. The decrease in f void suppresses the so-called "weak-links" and therefore enhances the J c. In order to enhance J c, the annealing condition should be optimized. The optimal annealing condition enforces the link between grains and avoids the loss of oxygen atoms in the superconducting core.

本文言語English
論文番号123004
ジャーナルApplied Physics Express
12
12
DOI
出版ステータスPublished - 2019 12 1

ASJC Scopus subject areas

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

フィンガープリント 「Superconducting critical current density enhanced to 285 A cm<sup>-2</sup> for Sr<sub>2</sub>VFeAsO<sub>3-δ</sub> tapes fabricated by ex situ powder-in-tube process」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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