Enhancement of trapped field and total trapped flux on GdBaCuO bulk by the MMPSC+IMRA method

Enhancement of trapped field and total trapped flux on GdBaCuO bulk by the MMPSC+IMRA method

The trapped field BTP(z) and the total trapped flux PhiT(z) as a function of the distance z from the bulk surface have been measured on a GdBaCuO superconducting bulk of 45 mm in diameter, which was magnetized by a sequential pulsed field application (SPA) method, a modified multi-pulse technique wi...

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Veröffentlicht in:Superconductor science & technology 2009-09, Vol.22 (9), p.095006-095006 (6)
Hauptverfasser: Fujishiro, Hiroyuki, Hiyama, Takuya, Naito, Tomoyuki, Yanagi, Yousuke, Itoh, Yoshitaka
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container_issue 9
container_start_page 095006
container_title Superconductor science & technology
container_volume 22
creator Fujishiro, Hiroyuki
Hiyama, Takuya
Naito, Tomoyuki
Yanagi, Yousuke
Itoh, Yoshitaka
description The trapped field BTP(z) and the total trapped flux PhiT(z) as a function of the distance z from the bulk surface have been measured on a GdBaCuO superconducting bulk of 45 mm in diameter, which was magnetized by a sequential pulsed field application (SPA) method, a modified multi-pulse technique with stepwise cooling (MMPSC), and a subsequent iterative magnetizing operation with gradually reduced pulse field amplitude (IMRA). A trapped field of BTP = 3.10 T was realized by the MMPSC method, which was higher than that attained by SPA (BTP = 2.35 T). PhiT (0.5 mm), which was 1.64 mWb after the MMPSC method, was enhanced by about 53%, to 2.51 mWb, by the subsequent IMRA method due to the additional flux trapping. The MMPSC method combined with the IMRA process (MMPSC+IMRA) is an effective and promising pulse field magnetizing technique to enhance both BTP and PhiT on any superconducting bulks.
doi_str_mv 10.1088/0953-2048/22/9/095006
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title Enhancement of trapped field and total trapped flux on GdBaCuO bulk by the MMPSC+IMRA method
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