Superconducting and transport properties of (Bi-Pb)-Sr-Ca-Cu-O with nano-Cr 2O 3 additions

Research output: Contribution to journalArticle

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Abstract

The effect of nano Cr 2O 3 additions in (Bi, Pb)-Sr-Ca-Cu-O superconductors using the coprecipitation method is reported. Nano Cr 2O 3 with 0.1, 0.3, 0.5, 0.7, and 1.0 wt.% were added to the (Bi, Pb)-Sr-Ca-Cu-O system. The critical temperature (T c) and transport critical current density (J c) were determined by the four-point probe technique. The phases in the samples were determined using the powder X-ray diffraction method. The microstructure was observed by a scanning electron microscope and the distribution of nano Cr 2O 3 was determined by energy-dispersive X-ray analysis (EDX). The maximum T c and J c were observed for the sample with 0.1 wt.% nano Cr 2O 3. The variation in the J c of all the samples was explained by the effective flux pinning by nano Cr 2O 3 in the samples. Using the self-field approximation together with the dependence of J c on temperature, the characteristic length (L c) associated with the pinning force was estimated to be approximately the same as the average grain size in all the samples.

Original languageEnglish
Pages (from-to)1648-1651
Number of pages4
JournalJournal of Electronic Materials
Volume36
Issue number12
DOIs
Publication statusPublished - Dec 2007

Fingerprint

Transport properties
transport properties
Flux pinning
Energy dispersive X ray analysis
Coprecipitation
X ray powder diffraction
Superconducting materials
Electron microscopes
Scanning
Temperature
Microstructure
BSCCO superconductors
flux pinning
critical current
critical temperature
x rays
electron microscopes
grain size
current density
microstructure

Keywords

  • Nano Cr O
  • Self-field
  • Superconductor
  • Transport critical current density

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Superconducting and transport properties of (Bi-Pb)-Sr-Ca-Cu-O with nano-Cr 2O 3 additions. / Wei, Kong; Abd. Shukor, Roslan.

In: Journal of Electronic Materials, Vol. 36, No. 12, 12.2007, p. 1648-1651.

Research output: Contribution to journalArticle

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