Temperature changes in a melt-processed YBCO superconductor activated by field cooling magnetizing process

T. Oka, K. Yokoyama, H. Fujishiro, M. Kaneyama, K. Noto

Research output: Contribution to journalConference article

11 Citations (Scopus)

Abstract

The temperature rise during the field cooling (FC) magnetizing process with various sweep rates by using a 10 T superconducting solenoid magnet was systematically evaluated with respect to an YBCO single domain trapped-field magnet cooled to 57-75 K by a GM refrigerator. The maximum temperature change has reached 6 K when the sweep rate was -11.3 mT/s and initial temperature of 57 K. The recent elevation of the sweep rate of superconducting magnet and the critical current density of bulk samples have made the heat generation serious even in the FC operation by quasi-static magnetic field.

Original languageEnglish
Pages (from-to)794-799
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

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Keywords

  • Bulk superconductor
  • Field cooling
  • Melt-process
  • Trapped field magnet

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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