Effect of high-temperature heat-treatment on the pinning properties of melt-textured Nd123

N. Chikumoto, J. Yoshioka, M. Otsuka, N. Hayashi, M. Murakami

研究成果: Article査読

39 被引用数 (Scopus)

抄録

We have investigated the effect of high-temperature annealing on the superconducting transition and the flux pinning properties of Nd123 melt-textured in 1% O2-Ar. After the high-temperature annealing, a decrease in Jc was observed in most samples even though no appreciable change was observed in Tc. TEM observations and EDX analysis show that the spatial variation of the Nd/Ba ratio almost disappears after high-temperature annealing. Therefore, the observed change in Jc-B properties can be understood by a reduction in the field-induced pinning due to homogenization of Nd/Ba substitution regions. These results strongly support the idea that the secondary peak effect and high pinning performance in Nd123 can be ascribed to the presence of Nd/Ba spatial variation.

本文言語English
ページ(範囲)253-259
ページ数7
ジャーナルPhysica C: Superconductivity and its applications
281
2-3
DOI
出版ステータスPublished - 1997 8月 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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