Influence of high frequency AC magnetic field on trapped magnetic field

Jun Ogawa, Satoshi Fukui, Tetsuo Oka, Mitsugi Yamaguchi, Takao Sato, Mamoru Takada, Ryuichi Sato, Masaru Tomita

Research output: Contribution to journalArticle

6 Citations (Scopus)


The trapped magnetic field in an HTS bulk is decayed and even erased by the application of an AC magnetic field whose amplitude is much smaller than the maximum trapped magnetic field. In previous experiments, the decay of the trapped magnetic field was shown to be due to the temperature rise of the bulk caused by the AC losses. Especially, in a high frequency magnetic field, AC losses are larger and the decay of the trapped magnetic field is accelerated by this AC loss increase. We investigated the time relationships of the AC loss of the HTS bulk in a high frequency magnetic field using the thermal equilibrium equation.

Original languageEnglish
Pages (from-to)3024-3027
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2
Publication statusPublished - 2007 Jun 1
Externally publishedYes



  • AC loss
  • Bulk temperature
  • HTS bulk
  • Thermal equilibrium equation
  • Trapped magnetic field

ASJC Scopus subject areas

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

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