Critical currents and magnetization properties of YBCO prepared by MPMG process

H. Fujimoto, Masato Murakami, S. Gotoh, K. Yamaguchi, M. Yoshida, T. Takata, N. Koshizuka, S. Tanaka

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Abstract

YBaCuO prepared by the Melt-Powder-Melt-Growth (MPMG) process has high critical current density over 30,000 A/cm2 at 77K and 1T. It has been found that non-superconducting Y2BaCuO5 (211) particles dispersed in the 123 superconducting phase are responsible for high J c values. The values of critical current densities increased with increasing the volume fraction of the 211 particles. An anomalous second peak was observed in magnetization loops for some samples which showed a broad T c transition in AC measurements, suggesting that some kinds of defects are responsible for the peak.

Original languageEnglish
Article number016
JournalSuperconductor Science and Technology
Volume5
Issue number1S
DOIs
Publication statusPublished - 1992
Externally publishedYes

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)

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