Approach from temperature measurement to trapped field enhancement in HTSC bulks by pulse field magnetizing

Hiroyuki Fujishiro, Kazuya Yokoyama, Masahiko Kaneyama, Manabu Ikebe, Tetsuo Oka, Koshichi Noto

Research output: Contribution to journalConference article

6 Citations (Scopus)

Abstract

The time dependences of the temperature rise ΔT(t) and the magnetization M(t) on the surface of the cryo-cooled SmBaCuO bulk superconductor have been investigated during the five successive magnetic pulse applications (No1-No5) of equal strength ranging from Bex = 3.83-6.07 T. The pinning loss (Qp) is estimated by the hysteresis loss QMH obtained by the M vs. applied field μ0Ha curve and the viscous loss (Qv) is estimated by subtracting QMH from the total Q which is estimated using the maximum temperature rise ΔT max and the specific heat C. For the first pulse (No1) application, Qp is a main origin of the heat generation and Qv is dominant for the No5 pulse. The temperature measurements combined with the measurements of the M-μ0Ha curve have been proved to give us the valuable information as for the enhancement of the trapped field by PFM.

Original languageEnglish
Pages (from-to)594-601
Number of pages8
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

Temperature measurement
high temperature superconductors
temperature measurement
augmentation
pulses
pulse frequency modulation
heat generation
Heat generation
curves
Superconducting materials
Specific heat
time dependence
Hysteresis
Magnetization
hysteresis
specific heat
Temperature
magnetization
temperature

Keywords

  • Heat generation
  • Hysteresis loss
  • Pinning and viscous loss
  • Pulse field magnetizing

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Approach from temperature measurement to trapped field enhancement in HTSC bulks by pulse field magnetizing. / Fujishiro, Hiroyuki; Yokoyama, Kazuya; Kaneyama, Masahiko; Ikebe, Manabu; Oka, Tetsuo; Noto, Koshichi.

In: Physica C: Superconductivity and its Applications, Vol. 426-431, No. I, 01.10.2005, p. 594-601.

Research output: Contribution to journalConference article

Fujishiro, Hiroyuki ; Yokoyama, Kazuya ; Kaneyama, Masahiko ; Ikebe, Manabu ; Oka, Tetsuo ; Noto, Koshichi. / Approach from temperature measurement to trapped field enhancement in HTSC bulks by pulse field magnetizing. In: Physica C: Superconductivity and its Applications. 2005 ; Vol. 426-431, No. I. pp. 594-601.
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AU - Oka, Tetsuo

AU - Noto, Koshichi

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