Superconductivity of Bi2Sr2Ca1−xYxCu2Oy Synthesized by Polymelized Complex Technique

Hiromasa Mazaki, Hiroshi Yasuoka, Masato Kakihana

Research output: Contribution to journalArticle

Abstract

Superconducting Bi-Sr-Ca-Y-Cu-O ceramics have been synthesized by the polymerized complex method at the Bi2Sr2Ca1−xYxCu2Oy (0 ≦ x ≦ 0.4) compositions, and the dependence of the superconducting transition on the hole concentration was studied. The onset temperature of the superconducting transition Tc (onset) was carefully measured in terms of complex susceptibility. The onset temperature is enhanced as x increases up to x = 0.1 and then decreases as x further increases. Wet chemical analyses were carried out to determine the average charges of Bi and Cu ions. To interpret the results, we propose that the mixed valence of Bi+5 and Bi+3 acts as a charge reservoir for the CuO2 planes.

Original languageEnglish
Pages (from-to)1066-1070
Number of pages5
Journaljournal of the japan society of powder and powder metallurgy
Volume38
Issue number8
DOIs
Publication statusPublished - 1991 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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