Improved superconducting properties due to Ag2O addition in NEG-123

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We prepared NEG + 10 mol% NEG-211 + 0.5 mol% Pt with 0-50 wt.% Ag2O, which are subjected to the oxygen-controlled melt-growth process. Microstructural observation showed that fine Ag particles are dispersed at lower Ag2O contents. At higher contents, Ag particles exhibited various sizes and shapes and segregated mostly in the vicinity of microcracks and pores. The irreversibility field increased with Ag2O content up to 20 wt.%, and even with 50 wt.% the magnetization loop was open at 77 K and 7 T. In the sample with 20 wt.% of Ag2O, a large critical current density of 10 kA cm-2 was recorded even at 7 T and 77 K with the field applied parallel to the c-axis of the sample.

Original languageEnglish
Pages (from-to)657-660
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume357-360
Issue numberSUPPL. 2
DOIs
Publication statusPublished - 2001 Aug
Externally publishedYes

Fingerprint

Microcracks
Magnetization
Oxygen
microcracks
critical current
current density
porosity
magnetization
oxygen

Keywords

  • Critical current density
  • Flux pinning
  • LRE-BaCuO
  • Melt-textured materials
  • Microstructure

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Improved superconducting properties due to Ag2O addition in NEG-123. / Miryala, Muralidhar; Murakami, Masato.

In: Physica C: Superconductivity and its Applications, Vol. 357-360, No. SUPPL. 2, 08.2001, p. 657-660.

Research output: Contribution to journalArticle

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