Microstructural and magnetic studies of sinter-forged (Bi, Pb)2Sr2Ca2Cu3Ox superconductor

B. M. Moon, V. N. Korenivski, K. V. Rao, Y. J. Kim

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The microstructural and magnetic properties of sinter-forged BiPbSrCaCuO superconductors have been studied. The as-sinter-forged sample consisted of significant microcracks all through the bulk and first forms into a Bi 2-2-1-2 phase (c = 3.08 nm). However, after heat treatment at 860°C in air for 10 days, the final sample transformed to microstructurally smooth grains of Bi 2-2-2-3 phase (c = 3.70 nm). ac magnetic susceptibility data taken at 0.1, 1 and 10 Oe evidence the onset of diamagnetic response of grains at Tc = 105 K with a rather narrow transition width, ΔTc = 3 K. TEM, SEM and XRD analyses reveal remarkable microstructural changes into a smooth laminar structure during the formation of Bi 2-2-2-3 phase.

Original languageEnglish
Pages (from-to)72-76
Number of pages5
JournalMaterials Letters
Volume14
Issue number1
DOIs
Publication statusPublished - 1992 Jun
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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