Abstract
We have measured the trapped field distribution in plates of melt processed YBa2Cu3Oy, (Y123) and SmBa2Cu3Oy, (Sm123) superconductors that have different field dependence of the critical current density (Jc). Sm123 materials were fabricated by the oxygen-controlled melt-growth (OCMG) process and exhibited the peak effect. The trapped fields were measured by scanning a Hall probe on the sample surface. Measurements were performed after a field of 3.5 T was applied in the field-cooled process. On the basis of the critical state model, the magnetic field distribution was calculated taking account of the field dependence of the critical current density. The calculated values were in good agreement with the measured data. We have also estimated trapped magnetic fields for Y123 and Sm123 when the grain size is enlarged, which showed that OCMG-processed Sm123 bulk superconductors have greater potential as trapped field magnets.
| Original language | English |
|---|---|
| Pages (from-to) | 164-168 |
| Number of pages | 5 |
| Journal | Materials Science and Engineering B |
| Volume | 53 |
| Issue number | 1-2 |
| Publication status | Published - 1998 May 1 |
| Externally published | Yes |
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Keywords
- Bulk
- Hall probe
- OCMG process
- SmBaCuO
- Superconducting permanent magnets
- Trapped field
- YBaCuO
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cite this
Comparative study of magnetic fields trapped in YBa2Cu3Oy, and SmBa2Cu3Oy superconducting bulks. / Nagashima, Ken; Hayashi, Noriki; Yoo, Sang Im; Fujimoto, Hiroyuki; Murakami, Masato.
In: Materials Science and Engineering B, Vol. 53, No. 1-2, 01.05.1998, p. 164-168.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Comparative study of magnetic fields trapped in YBa2Cu3Oy, and SmBa2Cu3Oy superconducting bulks
AU - Nagashima, Ken
AU - Hayashi, Noriki
AU - Yoo, Sang Im
AU - Fujimoto, Hiroyuki
AU - Murakami, Masato
PY - 1998/5/1
Y1 - 1998/5/1
N2 - We have measured the trapped field distribution in plates of melt processed YBa2Cu3Oy, (Y123) and SmBa2Cu3Oy, (Sm123) superconductors that have different field dependence of the critical current density (Jc). Sm123 materials were fabricated by the oxygen-controlled melt-growth (OCMG) process and exhibited the peak effect. The trapped fields were measured by scanning a Hall probe on the sample surface. Measurements were performed after a field of 3.5 T was applied in the field-cooled process. On the basis of the critical state model, the magnetic field distribution was calculated taking account of the field dependence of the critical current density. The calculated values were in good agreement with the measured data. We have also estimated trapped magnetic fields for Y123 and Sm123 when the grain size is enlarged, which showed that OCMG-processed Sm123 bulk superconductors have greater potential as trapped field magnets.
AB - We have measured the trapped field distribution in plates of melt processed YBa2Cu3Oy, (Y123) and SmBa2Cu3Oy, (Sm123) superconductors that have different field dependence of the critical current density (Jc). Sm123 materials were fabricated by the oxygen-controlled melt-growth (OCMG) process and exhibited the peak effect. The trapped fields were measured by scanning a Hall probe on the sample surface. Measurements were performed after a field of 3.5 T was applied in the field-cooled process. On the basis of the critical state model, the magnetic field distribution was calculated taking account of the field dependence of the critical current density. The calculated values were in good agreement with the measured data. We have also estimated trapped magnetic fields for Y123 and Sm123 when the grain size is enlarged, which showed that OCMG-processed Sm123 bulk superconductors have greater potential as trapped field magnets.
KW - Bulk
KW - Hall probe
KW - OCMG process
KW - SmBaCuO
KW - Superconducting permanent magnets
KW - Trapped field
KW - YBaCuO
UR - http://www.scopus.com/inward/record.url?scp=0012753445&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0012753445&partnerID=8YFLogxK
M3 - Article
VL - 53
SP - 164
EP - 168
JO - Materials Science and Engineering B: Solid-State Materials for Advanced Technology
JF - Materials Science and Engineering B: Solid-State Materials for Advanced Technology
SN - 0921-5107
IS - 1-2
ER -