Possibility of Tc and Jc enhancement in 10% BaSnO3-doped MPMG-processed YBCO

I. Monot, T. Higuchi, N. Sakai, M. Murakami

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Abstract

The effect of 10% BaSnO3 addition on the microstructure and the magnetic properties of MPMG-processed samples has been investigated. At high temperature, BaSnO3 was found to react rapidly with the liquid phases to form inclusions, a few micrometres in size, of a new phase containing Y, Ba, Cu, Sn, Pt, O components. It is difficult to homogeneously distribute these new phase inclusions in the microstructure, but the '123' grain size, the stoichiometry and the distribution of '211' inclusions do not seem to be affected by this doping. Moreover, in spite of these difficulties, we could locally show evidence of '211' refinement and the possibility of Tc enhancement. This results in sensible improvement in Jc(B) properties compared to undoped MPMG samples, up to 1.1*105 A cm -2 in zero field, at 77 K and 4*104 A cm -2 in 1 T.

Original languageEnglish
Article number015
Pages (from-to)783-786
Number of pages4
JournalSuperconductor Science and Technology
Volume7
Issue number10
DOIs
Publication statusPublished - 1994 Dec 1

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ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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