Composition-induced superconductivity (up to 55 K) in the system (Pb0.75Cu0.25)Sr2(Ca1-xYx)Cu2O7-δ

R. S. Liu*, S. F. Hu, I. Gameson, P. P. Edwards, A. Maignan, T. Rouillon, D. Groult, B. Raveau

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

30 引文 斯高帕斯(Scopus)

摘要

We demonstrate a compositionally induced superconductor-to-semiconductor transition in the system (Pb0.75Cu0.25)Sr2(Ca1-xYx)Cu2O7-δ. Superconducting behavior is observed over the composition range 0.1 ≤ x ≤ 0.6. Samples with 0.1 ≤ x ≤ 0.3 are multiphasic, but the superconducting transition temperature is a maximum (55 K) over this range of compositions. The sample having x = 0.5 gives rise to an acceptable phase purity, a superconducting transition temperature of 45 K, and the maximum superconducting (Meissner) volume fraction (20.2%). A superconductor-to-semiconductor transition occurs at x = 0.7.

原文英語
頁(從 - 到)276-282
頁數7
期刊Journal of Solid State Chemistry
93
發行號1
DOIs
出版狀態已發佈 - 1991 七月

ASJC Scopus subject areas

  • 電子、光磁材料
  • 陶瓷和複合材料
  • 凝聚態物理學
  • 物理與理論化學
  • 無機化學
  • 材料化學

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