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 |
| Event | ICMC 2002 - Xi an, China Duration: 2002 Jun 16 → 2002 Jun 20 |
Keywords
- (1 1 0)/(1 1 0) joint
- Er-Ba-Cu-O sintering plate
- Y-Ba-Cu-O bulk
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering