Superconducting properties of Nd1+xBa2-xCu3Oy single crystals isothermally grown at various temperatures

Takamitsu Higuchi, Koichiro Waki, Goro Osabe, Sang Im Yoo, Masato Murakami

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

Nd1+xBa2-xCu3Oy (Nd123ss) single crystals were isothermally grown under controlled oxygen partial pressure of 1% O2 at various growth temperatures (Tg) from 1000 to 1020°C with a flux method. The flux composition of 20 mol% NdBa2Cu3Oy (Nd123) and 80 mol% Ba3Cu5O8 (035) was employed. Nd123ss single crystals grown at Tg ≥ 1010°C exhibited a transition temperature Tc ≈ 95 K with transition width ≈ 1 K, the peak field (Bpk) ≈ 2-3 T and the irreversibility field (Birr) at 77 K much higher than the experimental limit of 7 T. As the growth temperature is lowered, both the Bpk and Birr were reduced, which can be explained in terms of the chemical fluctuation which can occur at lower Tg.

Original languageEnglish
Pages (from-to)641-645
Number of pages5
JournalSuperconductor Science and Technology
Volume13
Issue number6
DOIs
Publication statusPublished - 2000 Jun 1
Externally publishedYes
EventThe 2nd International Workshop on the Processing and Applications of Superconducting (RE)CBO Large Grain Materials - Morioka, Jpn
Duration: 1999 Oct 191999 Oct 22

ASJC Scopus subject areas

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

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