Nd/Ba substitution and oxygen deficiency effects on the pinning properties of Nd1+xBa2-xCu3O7-δ single crystals

S. Shibata, A. Yamamoto, Y. Feng, A. K. Pradhan, T. Machi, N. Koshizuka

研究成果: Article査読

3 被引用数 (Scopus)

抄録

The origin of the peak effect on Jc is studied for Nd1+xBa2-xCu3O7-δ single crystals grown by the slow cooling method under various partial O2 pressures, PO2 = 0.04 ∼ 1% in Ar atmosphere. We find that the peak effect disappears for the crystals grown under PO2 ∼ 0.04%, where the Nd/Ba substitution can be negligible. This result demonstrates the important role of Nd/Ba substitution for the peak effect. We also investigate the oxygen vacancy effect on the peak effect by using oxygen deficient samples. The large peak effect at relatively high fields seems to be brought by controlling the amount of Nd/Ba substitution rather than oxygen vacancies in almost fully oxygenated crystals.

本文言語English
ページ(範囲)523-526
ページ数4
ジャーナルPhysica C: Superconductivity and its applications
357-360
SUPPL. 2
DOI
出版ステータスPublished - 2001 8
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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