TY - JOUR
T1 - Investigation of the Flux Flow-inhibiting Effect of a Hole-opened Superconducting Bulk Magnet
AU - Yokoyama, K.
AU - Tsukui, T.
AU - Mita, H.
AU - Tsubonoya, N.
AU - Oka, T.
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant Number 24560343.
Publisher Copyright:
© 2014 The Authors.
PY - 2014
Y1 - 2014
N2 - A hole-opened bulk material has been proposed to supply magnetic flux into the large-size and high-performance bulk efficiently because superconductivity is intentionally lowered in the portion with holes. We were anxious about the flux flow in a high applied field, while it was confirmed that the flux flow was suppressed in a high applied field at a low temperature. To examine the flux flow-inhibiting effect in detail, in this paper, the time response of flux density in four portions, between the holes, the inside of the inner holes, the side opposite the holes, and the center, was measured. Although small holes served as a channel and magnetic flux flew out through a channel just after applying a pulsed field, a channel closed for up to 0.2 seconds, flux flow was disturbed, and then the magnetic flux was trapped. As Jc increased with a decrease in temperature, a channel closed more quickly, and a trapped field was enhanced.
AB - A hole-opened bulk material has been proposed to supply magnetic flux into the large-size and high-performance bulk efficiently because superconductivity is intentionally lowered in the portion with holes. We were anxious about the flux flow in a high applied field, while it was confirmed that the flux flow was suppressed in a high applied field at a low temperature. To examine the flux flow-inhibiting effect in detail, in this paper, the time response of flux density in four portions, between the holes, the inside of the inner holes, the side opposite the holes, and the center, was measured. Although small holes served as a channel and magnetic flux flew out through a channel just after applying a pulsed field, a channel closed for up to 0.2 seconds, flux flow was disturbed, and then the magnetic flux was trapped. As Jc increased with a decrease in temperature, a channel closed more quickly, and a trapped field was enhanced.
KW - flux flow
KW - pulsed field magnetization
KW - small hole
KW - superconducting bulk magnet
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U2 - 10.1016/j.phpro.2014.09.075
DO - 10.1016/j.phpro.2014.09.075
M3 - Conference article
AN - SCOPUS:85061908152
SN - 1875-3884
VL - 58
SP - 302
EP - 305
JO - Physics Procedia
JF - Physics Procedia
T2 - 26th International Symposium on Superconductivity, ISS 2013
Y2 - 18 November 2013 through 20 November 2013
ER -