Synthesis of the Pb-based superconductor of the Pb3201 phase (Pb2Cu)Sr0.9La1.1CuO6+δ by the modified polymerized complex method

Masatsune Kato, Atsushi Sakuma, Takashi Noji, Yoji Koike

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We have succeeded in obtaining single-phase samples of the Pb3201 phase (Pb2Cu)Sr0.9La1.1CuO6+δ by the modified polymerized complex method. At the first step of the synthesis, a transparent gel is found to be obtained by increasing the molar ratio of citric acid to total metal ions up to 5 without controlling the pH of the solution and without ethylene glycol. Secondly, the precursor is prepared by calcining the transparent gel. Finally, highly homogeneous samples with the onset temperature of the superconducting transition, ∼ 37 K, are obtained by sintering the precursor and subsequently annealing it. Moreover, the Pb3201 phase is found to be stable only for x = 1.1 in (Pb2Cu)Sr2-x,LaxCuO6+δ.

Original languageEnglish
Pages (from-to)109-114
Number of pages6
JournalPhysica C: Superconductivity and its applications
Volume266
Issue number1-2
DOIs
Publication statusPublished - 1996 Jul 20

Keywords

  • (PbCu)SrLaCuO
  • Gel
  • Pb3201 phase
  • Polymerized complex method
  • Synthesis

ASJC Scopus subject areas

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

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