Abstract
We have studied the effect of crystal orientation on the microstructure at joining regions between two blocks of Y-Ba-Cu-O bulk superconductors using Er-Ba-Cu-O sintering plate. The (1 0 0)/(1 0 0) joint suffered from the segregation of second phase and residual liquid phase, which reduced the critical current. In contrast, the (1 1 0)/(1 1 0) joint was free from the segregation of second phase and residual liquid phase. Microstructural observation showed that many triangular crystals were formed from the back melt zone in the (1 1 0)/(1 1 0) joint. On the other hand, the growth front was parallel to the (1 0 0) surfaces in the (1 0 0)/(1 0 0) joint. Such a difference in the growth morphology was responsible for the difference in the superconducting properties of the joints.
| Original language | English |
|---|---|
| Pages (from-to) | 495-499 |
| Number of pages | 5 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 386 |
| DOIs | |
| Publication status | Published - 2003 Apr 15 |
| Externally published | Yes |
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Keywords
- (1 1 0)/(1 1 0) joint
- Er-Ba-Cu-O sintering plate
- Y-Ba-Cu-O bulk
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
The crystallization in the welding region for Y-Ba-Cu-O bulk superconductors. / Yoshioka, J.; Iida, K.; Sakai, Naomichi; Murakami, Masato.
In: Physica C: Superconductivity and its Applications, Vol. 386, 15.04.2003, p. 495-499.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The crystallization in the welding region for Y-Ba-Cu-O bulk superconductors
AU - Yoshioka, J.
AU - Iida, K.
AU - Sakai, Naomichi
AU - Murakami, Masato
PY - 2003/4/15
Y1 - 2003/4/15
N2 - We have studied the effect of crystal orientation on the microstructure at joining regions between two blocks of Y-Ba-Cu-O bulk superconductors using Er-Ba-Cu-O sintering plate. The (1 0 0)/(1 0 0) joint suffered from the segregation of second phase and residual liquid phase, which reduced the critical current. In contrast, the (1 1 0)/(1 1 0) joint was free from the segregation of second phase and residual liquid phase. Microstructural observation showed that many triangular crystals were formed from the back melt zone in the (1 1 0)/(1 1 0) joint. On the other hand, the growth front was parallel to the (1 0 0) surfaces in the (1 0 0)/(1 0 0) joint. Such a difference in the growth morphology was responsible for the difference in the superconducting properties of the joints.
AB - We have studied the effect of crystal orientation on the microstructure at joining regions between two blocks of Y-Ba-Cu-O bulk superconductors using Er-Ba-Cu-O sintering plate. The (1 0 0)/(1 0 0) joint suffered from the segregation of second phase and residual liquid phase, which reduced the critical current. In contrast, the (1 1 0)/(1 1 0) joint was free from the segregation of second phase and residual liquid phase. Microstructural observation showed that many triangular crystals were formed from the back melt zone in the (1 1 0)/(1 1 0) joint. On the other hand, the growth front was parallel to the (1 0 0) surfaces in the (1 0 0)/(1 0 0) joint. Such a difference in the growth morphology was responsible for the difference in the superconducting properties of the joints.
KW - (1 1 0)/(1 1 0) joint
KW - Er-Ba-Cu-O sintering plate
KW - Y-Ba-Cu-O bulk
UR - http://www.scopus.com/inward/record.url?scp=0037445632&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037445632&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(02)02109-3
DO - 10.1016/S0921-4534(02)02109-3
M3 - Article
VL - 386
SP - 495
EP - 499
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
ER -