Abstract
A rectangular-shaped GdBaCuO bulk (33 × 33 × 20 mm 3) has been magnetized by pulse fields with various strengths from B ex = 3 T to 7 T at 44 K and 20 K. The time dependences of the local fields and temperatures have been measured at five positions on the bulk surface. The flux movement, flux trapping and the heat generation are closely related for lower applied fields, i.e., the temperature rise is larger at the specified positions, where a large number of magnetic fluxes are trapped. The heat generation is mainly due to the pinning loss in this condition. The maximum trapped field B T = 4.0 T can be realized on the bulk surface by a modified multi-pulse technique with stepwise cooling (MMPSC) method, on which B T reaches only 2.5 T at 20 K for a single pulse application.
| Original language | English |
|---|---|
| Pages (from-to) | 398-401 |
| Number of pages | 4 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 463-465 |
| Issue number | SUPPL. |
| DOIs | |
| Publication status | Published - 2007 Oct 1 |
| Externally published | Yes |
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Keywords
- MMPSC method
- Pulse field magnetization
- Rectangular-shaped bulk
- Temperature rise
- Trapped field
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Trapped field and temperature rise in rectangular-shaped HTSC bulk magnetized by pulse fields. / Tateiwa, T.; Sazuka, Y.; Fujishiro, H.; Hayashi, H.; Nagafuchi, T.; Oka, Tetsuo.
In: Physica C: Superconductivity and its Applications, Vol. 463-465, No. SUPPL., 01.10.2007, p. 398-401.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Trapped field and temperature rise in rectangular-shaped HTSC bulk magnetized by pulse fields
AU - Tateiwa, T.
AU - Sazuka, Y.
AU - Fujishiro, H.
AU - Hayashi, H.
AU - Nagafuchi, T.
AU - Oka, Tetsuo
PY - 2007/10/1
Y1 - 2007/10/1
N2 - A rectangular-shaped GdBaCuO bulk (33 × 33 × 20 mm 3) has been magnetized by pulse fields with various strengths from B ex = 3 T to 7 T at 44 K and 20 K. The time dependences of the local fields and temperatures have been measured at five positions on the bulk surface. The flux movement, flux trapping and the heat generation are closely related for lower applied fields, i.e., the temperature rise is larger at the specified positions, where a large number of magnetic fluxes are trapped. The heat generation is mainly due to the pinning loss in this condition. The maximum trapped field B T = 4.0 T can be realized on the bulk surface by a modified multi-pulse technique with stepwise cooling (MMPSC) method, on which B T reaches only 2.5 T at 20 K for a single pulse application.
AB - A rectangular-shaped GdBaCuO bulk (33 × 33 × 20 mm 3) has been magnetized by pulse fields with various strengths from B ex = 3 T to 7 T at 44 K and 20 K. The time dependences of the local fields and temperatures have been measured at five positions on the bulk surface. The flux movement, flux trapping and the heat generation are closely related for lower applied fields, i.e., the temperature rise is larger at the specified positions, where a large number of magnetic fluxes are trapped. The heat generation is mainly due to the pinning loss in this condition. The maximum trapped field B T = 4.0 T can be realized on the bulk surface by a modified multi-pulse technique with stepwise cooling (MMPSC) method, on which B T reaches only 2.5 T at 20 K for a single pulse application.
KW - MMPSC method
KW - Pulse field magnetization
KW - Rectangular-shaped bulk
KW - Temperature rise
KW - Trapped field
UR - http://www.scopus.com/inward/record.url?scp=34548476768&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34548476768&partnerID=8YFLogxK
U2 - 10.1016/j.physc.2007.03.442
DO - 10.1016/j.physc.2007.03.442
M3 - Article
AN - SCOPUS:34548476768
VL - 463-465
SP - 398
EP - 401
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - SUPPL.
ER -