抄録
We have proposed a holed superconducting bulk magnet to trap the magnetic field efficiently in the high-performance material excited by pulsed field magnetization. Previously, a single pulsed field was applied with varying amplitudes of the magnetic fields and temperatures to a GdBCO bulk material with four 2-mm-diameter holes, and the time responses of flux density on the bulk surface and trapped field distributions were measured. The experimental results suggested that the number of holes was too high because a large distortion appeared in the trapped field distributions. In this paper, we processed only a single hole with a different hole size and investigated the magnetization characteristics. After estimating the trapped field performance by applying a single pulsed field with varying its amplitude and temperature in the original material, a 1-mm-diameter hole was drilled; then the hole was extended to 2 mm in diameter, and the same experiments were carried out in each sample. A total magnetic flux of both 1-mm-diameter hole and 2-mm-diameter hole samples was about 10 percent higher than that of a four-hole sample at a low temperature. On the other hand, the value of a 2-mm-diameter hole sample was the same as that of a four-hole sample at a high temperature. The experimental results suggested that about 1 mm in diameter was proper for the hole size.
| 元の言語 | English |
|---|---|
| ページ（範囲） | 117-121 |
| ページ数 | 5 |
| ジャーナル | Physica C: Superconductivity and its Applications |
| 巻 | 518 |
| DOI | |
| 出版物ステータス | Published - 2015 6 25 |
| 外部発表 | Yes |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
これを引用
Pulsed field magnetization characteristics of a holed superconducting bulk magnet. / Yokoyama, K.; Igarashi, R.; Togasaki, R.; Oka, Tetsuo.
：: Physica C: Superconductivity and its Applications, 巻 518, 25.06.2015, p. 117-121.研究成果: Article
}
TY - JOUR
T1 - Pulsed field magnetization characteristics of a holed superconducting bulk magnet
AU - Yokoyama, K.
AU - Igarashi, R.
AU - Togasaki, R.
AU - Oka, Tetsuo
PY - 2015/6/25
Y1 - 2015/6/25
N2 - We have proposed a holed superconducting bulk magnet to trap the magnetic field efficiently in the high-performance material excited by pulsed field magnetization. Previously, a single pulsed field was applied with varying amplitudes of the magnetic fields and temperatures to a GdBCO bulk material with four 2-mm-diameter holes, and the time responses of flux density on the bulk surface and trapped field distributions were measured. The experimental results suggested that the number of holes was too high because a large distortion appeared in the trapped field distributions. In this paper, we processed only a single hole with a different hole size and investigated the magnetization characteristics. After estimating the trapped field performance by applying a single pulsed field with varying its amplitude and temperature in the original material, a 1-mm-diameter hole was drilled; then the hole was extended to 2 mm in diameter, and the same experiments were carried out in each sample. A total magnetic flux of both 1-mm-diameter hole and 2-mm-diameter hole samples was about 10 percent higher than that of a four-hole sample at a low temperature. On the other hand, the value of a 2-mm-diameter hole sample was the same as that of a four-hole sample at a high temperature. The experimental results suggested that about 1 mm in diameter was proper for the hole size.
AB - We have proposed a holed superconducting bulk magnet to trap the magnetic field efficiently in the high-performance material excited by pulsed field magnetization. Previously, a single pulsed field was applied with varying amplitudes of the magnetic fields and temperatures to a GdBCO bulk material with four 2-mm-diameter holes, and the time responses of flux density on the bulk surface and trapped field distributions were measured. The experimental results suggested that the number of holes was too high because a large distortion appeared in the trapped field distributions. In this paper, we processed only a single hole with a different hole size and investigated the magnetization characteristics. After estimating the trapped field performance by applying a single pulsed field with varying its amplitude and temperature in the original material, a 1-mm-diameter hole was drilled; then the hole was extended to 2 mm in diameter, and the same experiments were carried out in each sample. A total magnetic flux of both 1-mm-diameter hole and 2-mm-diameter hole samples was about 10 percent higher than that of a four-hole sample at a low temperature. On the other hand, the value of a 2-mm-diameter hole sample was the same as that of a four-hole sample at a high temperature. The experimental results suggested that about 1 mm in diameter was proper for the hole size.
KW - Flux jump
KW - Pulsed field magnetization
KW - Small hole
KW - Superconducting bulk magnet
KW - Total magnetic flux
UR - http://www.scopus.com/inward/record.url?scp=84944514527&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84944514527&partnerID=8YFLogxK
U2 - 10.1016/j.physc.2015.06.008
DO - 10.1016/j.physc.2015.06.008
M3 - Article
AN - SCOPUS:84944514527
VL - 518
SP - 117
EP - 121
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
ER -