Superconducting properties of (Gd, Nd)-Ba-Cu-O bulk superconductor fabricated by melt processing in air

S. Nariki, S. J. Seo, N. Sakai, M. Murakami

Research output: Contribution to journalConference article

7 Citations (Scopus)

Abstract

Superconducting properties of melt-textured (Gd, Nd)-Ba-Cu-O have been studied. Bulk samples were fabricated from precursors of Gd123-Nd422 with Ag2O, Pt and CeO2 in air. Ba-rich Nd422ss (Nd3.6Ba2.4Cu1.8O10-δ) was also used as a starting material. The onset Tc for the bulk sample with stoichiometric Nd422 was only about 80 K. The employment of Ba-rich Nd422ss instead of Nd422 enabled the formation of the high-Tc phase even by melt-texturing in air. Lattice parameters for the 123 phase suggested that the sample with stoichiometric Nd422 formed a LRE1+xBa2-xCu3Oy-type low-Tc solid solution, while the LRE-Ba substitution was suppressed in the sample with Ba-rich Nd422ss. The Jc-B curve for the sample with Ba-rich Nd422ss exhibited a secondary peak effect in about 1 T and 77 K, and the Jc value was larger than that of Gd-Ba-Cu-O bulk prepared in air.

Original languageEnglish
Pages (from-to)774-777
Number of pages4
JournalSuperconductor Science and Technology
Volume13
Issue number6
DOIs
Publication statusPublished - 2000 Jun 1
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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