Synthesis and superconductivity of PbBaSrY1-xCaxCu3O7

A. Tokiwa, M. Nagoshi, T. Oku, N. Kobayashi, M. Kikuchi, K. Hiraga, Y. Syono

研究成果: Article査読

34 被引用数 (Scopus)

抄録

Superconducting PbBaSrY1-xCaxCu3O7 with a maximum Tc onset at 65 K was synthesized. Single-phase materials were obtained for 0 ≤ x ≤ 0.25 by sintering in a 1% O2-N2 gas at 750-830°C and quenching from 785°C. Superconductivity appeared for x ≥ 0.15 and Tc increased with increasing Ca content. PbBaSrY0.7Ca0.3O7 was confirmed to achieve zero resistance at 37 K with about 45% bulk superconductivity. Superconductivity was considered to occur by hole introduction in CuO2 sheets by substituting Y3+ with Ca2+, the same mechanism as in Pb2Sr2Y1-xCaxCu3O8.

本文言語English
ページ(範囲)285-290
ページ数6
ジャーナルPhysica C: Superconductivity and its applications
168
3-4
DOI
出版ステータスPublished - 1990 6 15
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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