Abstract
We fabricated a single-domain Gd-Ba-Cu-O bulk superconductor 65 mm in diameter and studied the microstructure, superconducting and field-trapping properties. Melt-processing was performed under a controlled oxygen partial pressure of 1.0% using a precursor containing Gd123 and Gd211 powders in a molar ratio of 2:1, with 0.5 wt% of Pt and 20 wt% of Ag2O added. The distribution of Ag and Gd211 particles was almost homogeneous. The addition of Ag was very effective in reducing the amount of cracking in the sample. The maximum trapped magnetic field recorded was 3.05 T at 77 K. We also measured the trapped field between two Gd-Ba-Cu-O bulk samples in order to minimize the demagnetizing effect and found that the trapped field reached 4.3 T at 77 K.
| Original language | English |
|---|---|
| Journal | Superconductor Science and Technology |
| Volume | 18 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2005 Feb |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
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Melt-processed Gd-Ba-Cu-O superconductor with trapped field of 3 T at 77 K. / Nariki, S.; Sakai, Naomichi; Murakami, Masato.
In: Superconductor Science and Technology, Vol. 18, No. 2, 02.2005.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Melt-processed Gd-Ba-Cu-O superconductor with trapped field of 3 T at 77 K
AU - Nariki, S.
AU - Sakai, Naomichi
AU - Murakami, Masato
PY - 2005/2
Y1 - 2005/2
N2 - We fabricated a single-domain Gd-Ba-Cu-O bulk superconductor 65 mm in diameter and studied the microstructure, superconducting and field-trapping properties. Melt-processing was performed under a controlled oxygen partial pressure of 1.0% using a precursor containing Gd123 and Gd211 powders in a molar ratio of 2:1, with 0.5 wt% of Pt and 20 wt% of Ag2O added. The distribution of Ag and Gd211 particles was almost homogeneous. The addition of Ag was very effective in reducing the amount of cracking in the sample. The maximum trapped magnetic field recorded was 3.05 T at 77 K. We also measured the trapped field between two Gd-Ba-Cu-O bulk samples in order to minimize the demagnetizing effect and found that the trapped field reached 4.3 T at 77 K.
AB - We fabricated a single-domain Gd-Ba-Cu-O bulk superconductor 65 mm in diameter and studied the microstructure, superconducting and field-trapping properties. Melt-processing was performed under a controlled oxygen partial pressure of 1.0% using a precursor containing Gd123 and Gd211 powders in a molar ratio of 2:1, with 0.5 wt% of Pt and 20 wt% of Ag2O added. The distribution of Ag and Gd211 particles was almost homogeneous. The addition of Ag was very effective in reducing the amount of cracking in the sample. The maximum trapped magnetic field recorded was 3.05 T at 77 K. We also measured the trapped field between two Gd-Ba-Cu-O bulk samples in order to minimize the demagnetizing effect and found that the trapped field reached 4.3 T at 77 K.
UR - http://www.scopus.com/inward/record.url?scp=24344462212&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=24344462212&partnerID=8YFLogxK
U2 - 10.1088/0953-2048/18/2/026
DO - 10.1088/0953-2048/18/2/026
M3 - Article
AN - SCOPUS:24344462212
VL - 18
JO - Superconductor Science and Technology
JF - Superconductor Science and Technology
SN - 0953-2048
IS - 2
ER -