Formation and texture of Bi-2223 phase during sintering in a temperature gradient

X. Y. Lu, A. Nagata, K. Watanabe, T. Nojima, K. Sugawara, S. Hanada, S. Kamada

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The formation and texture of Bi-2223 phase during sintering in a temperature gradient were investigated. Co-precipitated powders with the composition of Bi:Pb:Sr:Ca:Cu=1.85:0.35:1.90:2.05:3.05 were used. Samples set on a silver holder were sintered at 850 °C for 120 h in a vertical tube furnace with a temperature gradient of 15 °C/cm installed in a solenoid-type superconducting magnet. A vertical magnetic field can be applied parallel to the long axis of the furnace. It has been found that the Bi-2223 grains with their c-axis parallel to the axial direction of the vertical tube furnace are formed not only on the surface, but also in the center of the sample sintered at 850 °C for 120 h in 15 °C/cm temperature gradient without magnetic field. Moreover, the sample sintered in the temperature gradient and in a 10 T magnetic field have a stronger c-axis alignment of Bi-2223 phase. It is suggested that both the temperature gradient and magnetic field during sintering are favorable for the c-axis alignment of Bi-2223 phase.

Original languageEnglish
Pages (from-to)602-606
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume412-414
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2004 Oct

Keywords

  • Bi-2223
  • Magnetic field sintering
  • Superconductors
  • Temperature gradient
  • Texture

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Formation and texture of Bi-2223 phase during sintering in a temperature gradient'. Together they form a unique fingerprint.

Cite this