Single-Grain Bulk YBa2Cu3Oy Superconductors Grown by Infiltration Growth Process Utilizing the YbBa2Cu3Oy + Liquid Phase as a Liquid Source

Miryala Sushma, Masato Murakami

Research output: Contribution to journalLetter

2 Citations (Scopus)

Abstract

The top-seeded infiltration growth (IG) processed YBa2Cu3Oy (Y-123) has several advantages compared to the same material produced by other melt process techniques. There is usually no shrinkage, a limited number of pores, and an uniform secondary phase particle dispersion in the Y-123 matrix. These characteristics of the IG process are very attractive for several industrial applications. In this paper, we produced a large single-grain Y-123 by IG and top seeded melt-growth process. Utilizing commercial YbBa2Cu3Oy (Yb-123) and a homemade Y2BaCuO5 (Y-211), we produced bulk YBa2Cu3Oy samples using Yb-123 + liquid (1:1) as a liquid source. Four facet lines on the top surfaces of the as-grown samples indicated a uniform growth from the seed up to sample edges. Magnetization measurements by SQUID magnetometer showed a sharp superconducting transition with Tc,onset at 92.1 K. The critical current density at 77 K and self-field was 39,000 A/cm2. Trapped field results confirmed that single grain Y-123 samples were produced utilizing the above process. Our results prove that Yb-123 + liquid (1:1) as a liquid source is effective in producing single grain Y-123 material by IG process.

Original languageEnglish
Pages (from-to)2291-2295
Number of pages5
JournalJournal of Superconductivity and Novel Magnetism
Volume31
Issue number8
DOIs
Publication statusPublished - 2018 Aug 1

Keywords

  • Critical current density
  • IG process
  • Trapped field
  • Y-123
  • Yb-123 + liquid (1:1)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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