Abstract
The trapped magnetic field in a bulk is decayed and even erased by the application of the AC external magnetic field whose amplitude is much smaller than the trapped magnetic field. In the previous work, an experimental result showed that the decay of the trapped magnetic field was due to temperature rise of the bulk caused by the AC losses. Based on this result, it is considered that the decay can be suppressed by (a) improvement of the cooling of the bulk and (b) reduction of the AC losses. We verified the effectiveness of these methods by conducting an experiment using a recently developed metal impregnated bulk which has high critical current density and improved thermal conductivity.
| Original language | English |
|---|---|
| Pages (from-to) | 708-713 |
| Number of pages | 6 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 412-414 |
| Issue number | SPEC. ISS. |
| DOIs | |
| Publication status | Published - 2004 Oct |
| Externally published | Yes |
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Keywords
- AC losses
- Bulk temperature
- HTS bult
- Trapped magnetic field
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Study on suppression of decay of trapped magnetic field in HTS bulk subject to AC magnetic field. / Zushi, Y.; Asaba, I.; Ogawa, J.; Yamagishi, K.; Tsukamoto, O.; Murakami, Masato; Tomita, M.
In: Physica C: Superconductivity and its Applications, Vol. 412-414, No. SPEC. ISS., 10.2004, p. 708-713.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Study on suppression of decay of trapped magnetic field in HTS bulk subject to AC magnetic field
AU - Zushi, Y.
AU - Asaba, I.
AU - Ogawa, J.
AU - Yamagishi, K.
AU - Tsukamoto, O.
AU - Murakami, Masato
AU - Tomita, M.
PY - 2004/10
Y1 - 2004/10
N2 - The trapped magnetic field in a bulk is decayed and even erased by the application of the AC external magnetic field whose amplitude is much smaller than the trapped magnetic field. In the previous work, an experimental result showed that the decay of the trapped magnetic field was due to temperature rise of the bulk caused by the AC losses. Based on this result, it is considered that the decay can be suppressed by (a) improvement of the cooling of the bulk and (b) reduction of the AC losses. We verified the effectiveness of these methods by conducting an experiment using a recently developed metal impregnated bulk which has high critical current density and improved thermal conductivity.
AB - The trapped magnetic field in a bulk is decayed and even erased by the application of the AC external magnetic field whose amplitude is much smaller than the trapped magnetic field. In the previous work, an experimental result showed that the decay of the trapped magnetic field was due to temperature rise of the bulk caused by the AC losses. Based on this result, it is considered that the decay can be suppressed by (a) improvement of the cooling of the bulk and (b) reduction of the AC losses. We verified the effectiveness of these methods by conducting an experiment using a recently developed metal impregnated bulk which has high critical current density and improved thermal conductivity.
KW - AC losses
KW - Bulk temperature
KW - HTS bult
KW - Trapped magnetic field
UR - http://www.scopus.com/inward/record.url?scp=4644278910&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=4644278910&partnerID=8YFLogxK
U2 - 10.1016/j.physc.2004.01.094
DO - 10.1016/j.physc.2004.01.094
M3 - Article
VL - 412-414
SP - 708
EP - 713
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - SPEC. ISS.
ER -