Time evolution and spatial distribution of temperature in YBCO bulk superconductor after pulse field magnetizing

Hiroyuki Fujishiro, Tetsuo Oka, Kazuya Yokoyama, Koshichi Noto

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The time evolutions of temperature rise ΔT(t) after pulse field magnetizing have been measured on the surface of a cryo-cooled YBaCuO bulk superconductor. The temperature rise ΔT increases with increasing pulse field strength, and a quite large temperature rise (ΔTmax ∼ 18.8 K) is observed just before the trapped magnetic flux reaches the central region of the bulk. The epoxy resin, impregnated and coated to the bulk crystal for mechanical reinforcement, prevents the heat exhaust towards the cold stage of the refrigerator and it needs much time to recover its initial temperature. The spatial distribution of ΔT(t) has indicated that the magnetic fluxes tend to enter into the bulk, avoiding the 4-fold growth sector boundaries of the bulk crystal.

Original languageEnglish
Pages (from-to)809-814
Number of pages6
JournalSuperconductor Science and Technology
Volume16
Issue number7
DOIs
Publication statusPublished - 2003 Jul 1
Externally publishedYes

Fingerprint

Spatial distribution
Superconducting materials
spatial distribution
Magnetic flux
pulses
magnetic flux
Epoxy Resins
Temperature
Crystals
temperature
Refrigerators
refrigerators
epoxy resins
reinforcement
Epoxy resins
crystals
field strength
Reinforcement
sectors
heat

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Time evolution and spatial distribution of temperature in YBCO bulk superconductor after pulse field magnetizing. / Fujishiro, Hiroyuki; Oka, Tetsuo; Yokoyama, Kazuya; Noto, Koshichi.

In: Superconductor Science and Technology, Vol. 16, No. 7, 01.07.2003, p. 809-814.

Research output: Contribution to journalArticle

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