The effect of La substitution in superconducting and related (La, Ln, Ce)2CuO4 (Ln = Nd and Gd) compounds

Y. K. Tao, M. Banvalot, Y. Y. Sun, R. L. Meng, P. H. Hor, C. W. Chu

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29 Citations (Scopus)

Abstract

We have prepared and studied the T′-structured LaLn1-xCexCuO4 (Ln = Nd and Gd) compounds. For Ln = Nd, superconductivity was observed over dopant concentration from x = 0.1 to x = 0.16, with Tc/max = 22 K at x = 0.1. Incorporation of La into the Ln site of the Nd2 CuO4 system enlarges the Ce-dopant concentration range over which superconductivity is achieved and provokes a shift of the highest transition temperature towards lower Ce concentration. For Ln = Gd, it makes the maximum solubility significantly increase from x = 0.15 to x = 0.225. No superconductivity was observed over the entire solubility range in the Gd system.

Original languageEnglish
Pages (from-to)13-16
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume165
Issue number1
DOIs
Publication statusPublished - 1990 Jan 1

All Science Journal Classification (ASJC) codes

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

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