Bulk new high-Tc superconductors in the (Pb,Cu)Sr2(Ca,Y)Cu2O7-δ and (In,Pb,Cu)Sr2(Ca,Y)Cu2O7-δ systems

R. S. Liu, S. F. Hu, I. Gameson, S. D. Obertelli, P. P. Edwards, D. A. Jefferson, T. Rouillon, M. Hervieu, C. Michel, D. Groult, J. Provost, B. Raveau

研究成果: 雜誌貢獻期刊論文同行評審

2 引文 斯高帕斯(Scopus)

摘要

Bulk superconductivity was observed in the systems (Pb0.75Cu0.25)Sr2(Ca1-xYx)Cu2O7-δ and (InyPb0.75-yCu0.25)Sr2(Ca0.5Y0.5)Cu2O. With decreasing x in (Pb0.75Cu0.25)Sr2(Ca1-xYx)Cu2O7-δ, Tc increases up to 55 K at x=0.1; however this specimen is multiphasic with superconducting Meissner volume fraction of ca. 1.5%. In contrast, the sample with x=0.5 is nearly single phase and has a lower Tc (45 K) and a high superconducting Meissner volume fraction ca. 20.2%. An increase of the indium doping in (InyPb0.75-yCu0.25Sr2(Ca0.5Y0.5)Cu2O7-δ, 0 ≤y≤0.2, results in an increase in the superconducting transition temperature from 45 K for y=0, to 60 K for y=0.2.

原文英語
頁(從 - 到)99-101
頁數3
期刊Physica C: Superconductivity and its applications
190
發行號1-2
DOIs
出版狀態已發佈 - 1991 十二月 2

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

指紋 深入研究「Bulk new high-T<sub>c</sub> superconductors in the (Pb,Cu)Sr<sub>2</sub>(Ca,Y)Cu<sub>2</sub>O<sub>7-δ</sub> and (In,Pb,Cu)Sr<sub>2</sub>(Ca,Y)Cu<sub>2</sub>O<sub>7-δ</sub> systems」主題。共同形成了獨特的指紋。

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