Magnetic levitation in liquid oxygen and its applications

M. Muralidhar, N. Sakai, M. Jirsa, M. Murakami, N. Koshizuka

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Combination of extremely fine Gd-211 particles and the LRE/Ba solid solution pinning disorder in a melt processed (Nd0.33Eu 0.33Gd0.33)Ba2Cu3Oy, followed by an optimal oxygenation resulted in outstanding electromagnetic performance of the material. Transmission electron microscopy with energy dispersive X-ray analysis identified nanometer scale Zr-rich NEG-Ba-Cu-O particles. These were evidently responsible for a substantial increase of the critical current density at 77 K and the rise by an order of magnitude at and above 90 K. Efficient field trapping ability at 90.2 K enabled new NEG-123 magnet to be for the first time employed in levitation at liquid oxygen.

Original languageEnglish
Pages (from-to)739-743
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume412-414
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2004 Oct 1

Keywords

  • Critical current density (J)
  • LRE-BaCuO
  • Levitation at 90 K for material index
  • Melt processing
  • TEM

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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