Abstract
Melt-textured large grain high temperature superconducting materials have a characteristic feature so as to trap the magnetic fields applied from outside, and act as quasi- permanent magnets yielding intense magnetic fields which reach values of several T in the open space above the sample surface. The performance of the magnets has been precisely investigated when intense pulsed magnetic fields generated by feeding currents up to 9.12 kA to the pulse coil settled around a cylindrical bulk magnet. In the experiment a condenser bank with large capacitances of 40-120 mF has been adapted to apply the magnetic fields up to 8.44 T to the Gd-Ba-Cu-O-based bulk magnet with the size of 30 mm in diameter. The trapped field has reached 3.28 T on the sample surface. The magnetic fields successively penetrating the sample in the process called the IMRA method have been investigated with respect to the behavior of the magnetic flux in the sample.
| Original language | English |
|---|---|
| Article number | 5658131 |
| Pages (from-to) | 3356-3359 |
| Number of pages | 4 |
| Journal | IEEE Transactions on Applied Superconductivity |
| Volume | 21 |
| Issue number | 3 PART 3 |
| DOIs | |
| Publication status | Published - 2011 Jun 1 |
| Externally published | Yes |
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Keywords
- Bulk superconductor
- Magnetic field generator
- Refrigerator
- Trapped field magnet
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
Cite this
Performance of trapped magnetic field in superconducting bulk magnets activated by pulsed field magnetization. / Oka, Tetsuo; Seki, H.; Ogawa, J.; Fukui, S.; Sato, T.; Yokoyama, K.
In: IEEE Transactions on Applied Superconductivity, Vol. 21, No. 3 PART 3, 5658131, 01.06.2011, p. 3356-3359.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Performance of trapped magnetic field in superconducting bulk magnets activated by pulsed field magnetization
AU - Oka, Tetsuo
AU - Seki, H.
AU - Ogawa, J.
AU - Fukui, S.
AU - Sato, T.
AU - Yokoyama, K.
PY - 2011/6/1
Y1 - 2011/6/1
N2 - Melt-textured large grain high temperature superconducting materials have a characteristic feature so as to trap the magnetic fields applied from outside, and act as quasi- permanent magnets yielding intense magnetic fields which reach values of several T in the open space above the sample surface. The performance of the magnets has been precisely investigated when intense pulsed magnetic fields generated by feeding currents up to 9.12 kA to the pulse coil settled around a cylindrical bulk magnet. In the experiment a condenser bank with large capacitances of 40-120 mF has been adapted to apply the magnetic fields up to 8.44 T to the Gd-Ba-Cu-O-based bulk magnet with the size of 30 mm in diameter. The trapped field has reached 3.28 T on the sample surface. The magnetic fields successively penetrating the sample in the process called the IMRA method have been investigated with respect to the behavior of the magnetic flux in the sample.
AB - Melt-textured large grain high temperature superconducting materials have a characteristic feature so as to trap the magnetic fields applied from outside, and act as quasi- permanent magnets yielding intense magnetic fields which reach values of several T in the open space above the sample surface. The performance of the magnets has been precisely investigated when intense pulsed magnetic fields generated by feeding currents up to 9.12 kA to the pulse coil settled around a cylindrical bulk magnet. In the experiment a condenser bank with large capacitances of 40-120 mF has been adapted to apply the magnetic fields up to 8.44 T to the Gd-Ba-Cu-O-based bulk magnet with the size of 30 mm in diameter. The trapped field has reached 3.28 T on the sample surface. The magnetic fields successively penetrating the sample in the process called the IMRA method have been investigated with respect to the behavior of the magnetic flux in the sample.
KW - Bulk superconductor
KW - Magnetic field generator
KW - Refrigerator
KW - Trapped field magnet
UR - http://www.scopus.com/inward/record.url?scp=79957962947&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79957962947&partnerID=8YFLogxK
U2 - 10.1109/TASC.2010.2091236
DO - 10.1109/TASC.2010.2091236
M3 - Article
AN - SCOPUS:79957962947
VL - 21
SP - 3356
EP - 3359
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
SN - 1051-8223
IS - 3 PART 3
M1 - 5658131
ER -