Development of Melt-processed (Nd,Eu,Gd)Ba 2 Cu 3 O y Superconductors in Air

K. Suzuki, Muralidhar Miryala, N. Koshizuka, Kazuo Inoue, Masato Murakami

Research output: Contribution to journalConference article

Abstract

(Nd 0.1 Eu 0.1 Gd 0.8 )Ba 2 Cu 3 O y "NEG-123"superconductors were synthesized as a function of BaO 2 content with the aim of reducing NEG/Ba substitution and preparing batch production in air. The DTA data were used to schedule the heat treatment profile of the melt growth process. The magnetization measurements indicated that superconducting transition temperature increased with increasing the BaO 2 concentration and a T c (onset) reached around 95 K for the sample with 24 mol% BaO 2 , which is similar to the NEG samples processed in reduced oxygen pressure. Moreover, the superconducting transition temperature decreased when BaO 2 content exceeded 28 mol%. The irreversibility field was increased with increasing the BaO 2 concentration and reached >5 T for the sample with 24 mol% BaO 2 and decreased thereafter. The experimental results suggest that the present approach will contribute to large scale batch production of melt-processed NEG-123 materials in air.

Original languageEnglish
Pages (from-to)70-73
Number of pages4
JournalPhysics Procedia
Volume58
DOIs
Publication statusPublished - 2013 Jan 1
Event26th International Symposium on Superconductivity, ISS 2013 - Tokyo, Japan
Duration: 2013 Nov 182013 Nov 20

Keywords

  • BaO
  • critical current density (J )
  • LRE-Ba Cu O
  • melt growth in air
  • superconducting transition temperature (T )

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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