Abstract
Gd-Ba-Cu-O bulk superconductors have significant potential for various applications due to the high critical current density and the highly trapped magnetic fields. Recently we have developed a large sized bulk superconductor using Gd210, which is discovered in the microgravity experiment. We investigated the mechanical properties and the cryostability of the Gd-Ba-Cu-O bulk superconductor to determine how to improve toughness and heat conduction of the large sized bulk superconductor. We introduced a stainless ring around the circumference of the bulk to increase the fracture strength of the bulk. Also, we introduced Al wires inserted in the hole along the c-axis of the bulk, and then the sample was subjected to the impregnation by using Bi-Sn-Cd alloy. We measured the trapped magnetic fields and the repulsive forces of the samples. The trapped magnetic field distributions were 1.13-1.36 T. The repulsive forces at 1 mm gap between the sample bulk and the permanent magnet with the surface magnetic induction of 0.37 T were about 70 N at 77 K. We have also measured the temperature dependence of the trapped magnetic field, and confirmed the effect of metal impregnation.
| Original language | English |
|---|---|
| Pages (from-to) | 375-378 |
| Number of pages | 4 |
| Journal | Physica C: Superconductivity and its applications |
| Volume | 445-448 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 2006 Oct 1 |
| Externally published | Yes |
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Keywords
- Gd-Ba-Cu-O
- Magnetic levitation force
- Metal impregnation
- Trapped magnetic field
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
Cite this
Effect of metal impregnation in the field cool magnetization of bulk superconductor. / Kita, M.; Nariki, S.; Sakai, Naomichi; Hirabayashi, I.
In: Physica C: Superconductivity and its applications, Vol. 445-448, No. 1-2, 01.10.2006, p. 375-378.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of metal impregnation in the field cool magnetization of bulk superconductor
AU - Kita, M.
AU - Nariki, S.
AU - Sakai, Naomichi
AU - Hirabayashi, I.
PY - 2006/10/1
Y1 - 2006/10/1
N2 - Gd-Ba-Cu-O bulk superconductors have significant potential for various applications due to the high critical current density and the highly trapped magnetic fields. Recently we have developed a large sized bulk superconductor using Gd210, which is discovered in the microgravity experiment. We investigated the mechanical properties and the cryostability of the Gd-Ba-Cu-O bulk superconductor to determine how to improve toughness and heat conduction of the large sized bulk superconductor. We introduced a stainless ring around the circumference of the bulk to increase the fracture strength of the bulk. Also, we introduced Al wires inserted in the hole along the c-axis of the bulk, and then the sample was subjected to the impregnation by using Bi-Sn-Cd alloy. We measured the trapped magnetic fields and the repulsive forces of the samples. The trapped magnetic field distributions were 1.13-1.36 T. The repulsive forces at 1 mm gap between the sample bulk and the permanent magnet with the surface magnetic induction of 0.37 T were about 70 N at 77 K. We have also measured the temperature dependence of the trapped magnetic field, and confirmed the effect of metal impregnation.
AB - Gd-Ba-Cu-O bulk superconductors have significant potential for various applications due to the high critical current density and the highly trapped magnetic fields. Recently we have developed a large sized bulk superconductor using Gd210, which is discovered in the microgravity experiment. We investigated the mechanical properties and the cryostability of the Gd-Ba-Cu-O bulk superconductor to determine how to improve toughness and heat conduction of the large sized bulk superconductor. We introduced a stainless ring around the circumference of the bulk to increase the fracture strength of the bulk. Also, we introduced Al wires inserted in the hole along the c-axis of the bulk, and then the sample was subjected to the impregnation by using Bi-Sn-Cd alloy. We measured the trapped magnetic fields and the repulsive forces of the samples. The trapped magnetic field distributions were 1.13-1.36 T. The repulsive forces at 1 mm gap between the sample bulk and the permanent magnet with the surface magnetic induction of 0.37 T were about 70 N at 77 K. We have also measured the temperature dependence of the trapped magnetic field, and confirmed the effect of metal impregnation.
KW - Gd-Ba-Cu-O
KW - Magnetic levitation force
KW - Metal impregnation
KW - Trapped magnetic field
UR - http://www.scopus.com/inward/record.url?scp=33748207225&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33748207225&partnerID=8YFLogxK
U2 - 10.1016/j.physc.2006.04.021
DO - 10.1016/j.physc.2006.04.021
M3 - Article
AN - SCOPUS:33748207225
VL - 445-448
SP - 375
EP - 378
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 1-2
ER -