Field trapping and magnetic levitation performances of large single-grain Gd-Ba-Cu-O at different temperatures

S. Nariki, M. Fujikura, N. Sakai, I. Hirabayashi, M. Murakami

Research output: Contribution to journalConference article

16 Citations (Scopus)

Abstract

We measured the temperature dependence of the trapped field and the magnetic levitation force for c-axis-oriented single-grain Gd-Ba-Cu-O bulk samples 48 mm in diameter. Trapped magnetic field of the samples was 2.1-2.2 T at 77 K and increased with decreasing temperature and reached 4.1 T at 70 K, however the sample fractured during the measurements at lower temperatures due to a large electromagnetic force. The reinforcement by a metal ring was effective in improving the mechanical strength. The sample encapsulated in an Al ring could trap a very high magnetic field of 9.0 T at 50 K. In liquid O 2 the Gd-Ba-Cu-O bulk exhibited a trapped field of 0.42 T and a magnetic levitation force about a half value of that in liquid N2.

Original languageEnglish
Pages (from-to)654-659
Number of pages6
JournalPhysica C: Superconductivity and its applications
Volume426-431
Issue numberI
DOIs
Publication statusPublished - 2005 Oct 1
EventProceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity -
Duration: 2004 Nov 232004 Nov 25

Keywords

  • Magnetic levitation force Gd-Ba-Cu-O
  • Melt-textured bulk
  • Trapped magnetic field
  • liquid O

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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