Heat propagation analysis in HTSC bulks during pulse field magnetization

Hiroyuki Fujishiro, Shusuke Kawaguchi, Masahiko Kaneyama, Atsushi Fujiwara, Tatsuya Tateiwa, Tetsuo Oka

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


The time evolutions of the three-dimensional temperature profiles in a superconducting bulk disc have been calculated after applying a pulse field in the pulse field magnetization (PFM) by use of a finite element method (FEM). The total generated heat Q, experimentally estimated using the maximum temperature rise ΔTmax and specific heat C of the bulk, used in the analysis and the distribution of Q in the periphery region of the bulk, is suitably supposed in order that the calculated time evolutions of temperatures T(t) reproduce the measured ones on the bulk surface. From the analysis, the heat generation during PFM takes place under adiabatic conditions because the total Q value is about one or two orders of magnitude larger than the cooling power of the cryocooler used. The enhancement of the total heat capacity by setting a stainless steel ring onto the bulk as a heat reservoir is one of the effective methods to reduce the temperature rise and to enhance the trapped field.

Original languageEnglish
Pages (from-to)S540-S544
JournalSuperconductor Science and Technology
Issue number7
Publication statusPublished - 2006 Jul
Externally publishedYes

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry


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