Study on suppression of decay of trapped magnetic field in HTS bulk subject to AC magnetic field

Y. Zushi, I. Asaba, J. Ogawa, K. Yamagishi, O. Tsukamoto, M. Murakami, M. Tomita

Research output: Contribution to journalArticle

16 Citations (Scopus)


The trapped magnetic field in a bulk is decayed and even erased by the application of the AC external magnetic field whose amplitude is much smaller than the trapped magnetic field. In the previous work, an experimental result showed that the decay of the trapped magnetic field was due to temperature rise of the bulk caused by the AC losses. Based on this result, it is considered that the decay can be suppressed by (a) improvement of the cooling of the bulk and (b) reduction of the AC losses. We verified the effectiveness of these methods by conducting an experiment using a recently developed metal impregnated bulk which has high critical current density and improved thermal conductivity.

Original languageEnglish
Pages (from-to)708-713
Number of pages6
JournalPhysica C: Superconductivity and its applications
Issue numberSPEC. ISS.
Publication statusPublished - 2004 Oct 1



  • AC losses
  • Bulk temperature
  • HTS bult
  • Trapped magnetic field

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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