Formation of Bi,Pb-2223 and microstructural evolution in Pb-Ca-Cu deposited Bi-2212(001) single crystal by heat treatment

T. Kajihara, Y. Shimada, S. Hata, K. Ikeda, H. Nakashima, A. Matsumoto, T. Mochiku, H. Kitaguchi, T. Doi

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

In order to study the mechanism of phase transformation from Bi-2212 to Bi-2223, we fabricated Pb-Ca-Cu deposited Bi-2212 (001) single crystals as precursors of the Bi,Pb-2223 phase. These single crystals were heated in a sintered Bi-Pb-Sr-Ca-Cu-O pellet, and microstructure was observed by analytical electron microscopy. As a result of the microstructural observation around the Bi,Pb-2223 phase, two formation paths of Bi,Pb-2223 were recognized. One is the formation from a liquid phase which is formed by Bi-2212 and melting of the secondary phases such as (Ca,Sr)2PbO4 and CuO. The other is the growth of Bi,Pb-2223 into Bi-2212 phase by diffusion of Pb, Ca and Cu atoms along the 〈hk0〉 directions of Bi-2212.

Original languageEnglish
Pages (from-to)69-72
Number of pages4
JournalPhysics Procedia
Volume45
DOIs
Publication statusPublished - 2013 Jan 1
Externally publishedYes
Event25th International Symposium on Superconductivity, ISS 2012 - Tokyo, Japan
Duration: 2012 Dec 32012 Dec 5

Keywords

  • Bi, Pb-2223
  • Bi-2212 single crystal
  • Heat treatment
  • Pb-Ca-Cu film
  • Phase transformation
  • Scanning electron microscopy
  • Scanning transmission electron maicroscopy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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