Excitation field dependence, frequency dependence and anisotropy of the irreversibility line in MPMG YBa2Cu3O7 with Y2BaCuO5 inclusions

M. Slaski, L. T. Sagdahl, L. K. Heill, K. Fossheim, M. Murakami, H. Fujimoto, N. Koshizuka, S. Tanaka

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Most applications of superconducting materials require high critical current density. Melt-powder-melt-grown (MPMG) YBa2Cu 3O7 with Y2BaCuO5 inclusions were found to have the highest critical current in bulk to date. The authors report a systematic study of the irreversible behaviour in the MPMG material. The irreversibility line was measured in external fields up to 8 T using an AC susceptibility technique. Large anisotropy of the irreversibility line for different orientations of the field was observed. The frequency dependence was found to be logarithmic in the range 10 to 105 Hz. In order to study the excitation field dependence in detail, they applied AC fields from 0.01 G up to 30 G.

Original languageEnglish
Article number077
Pages (from-to)S340-S342
JournalSuperconductor Science and Technology
Volume5
Issue number1S
DOIs
Publication statusPublished - 1992 Dec 1

ASJC Scopus subject areas

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

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