Partial substitution of Ba for Sr in the cuprate superconductor Bi 2 (Sr,La) 2 CuO 6+ δ

Tianwen Luo, Masatsune Kato, Tamon Yoshida, Takashi Noji, Yoji Koike

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1 Citation (Scopus)

Abstract

Polycrystalline samples of the Bi-based cuprate superconductors Bi 2 Sr 2- x - y Ba x La y CuO 6+ δ (y(La) = 0, 0.4, 0.6) have been prepared by the conventional solid-state reaction method to increase the superconducting transition temperature, T c , in the so-called Bi-2201 phase. It has been found that the solubility limit of Ba is x(Ba) = 0, 0.2 and 0.3 for y(La) = 0, 0.4 and 0.6, respectively. Accordingly, the La-substitution for Sr is effective for the Ba-substitution for Sr. Superconductivity has also been observed for the Ba-substituted samples, but the increase in T c through the Ba-substitution is only a few Kelvins.

Original languageEnglish
Pages (from-to)49-51
Number of pages3
JournalPhysica C: Superconductivity and its applications
Volume561
DOIs
Publication statusPublished - 2019 Jun 15

Keywords

  • Bi-2201
  • Cuprate superconductor
  • Elemental substitution
  • Superconducting transition temperature

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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