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

Tetsuo 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
Externally publishedYes
EventProceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity -
Duration: 2004 Nov 232004 Nov 25

Fingerprint

YBCO superconductors
Superconducting materials
Cooling
cooling
Magnets
magnets
Critical current density (superconductivity)
Superconducting magnets
heat generation
Refrigerators
Solenoids
Heat generation
refrigerators
superconducting magnets
solenoids
Temperature
temperature
critical current
Magnetic fields
current density

Keywords

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

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Temperature changes in a melt-processed YBCO superconductor activated by field cooling magnetizing process. / Oka, Tetsuo; Yokoyama, K.; Fujishiro, H.; Kaneyama, M.; Noto, K.

In: Physica C: Superconductivity and its Applications, Vol. 426-431, No. I, 01.10.2005, p. 794-799.

Research output: Contribution to journalConference article

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