Abstract
We investigated the effect of Ag addition on cold-seeded melt-growth of Gd-Ba-Cu-O superconductors using Nd123 seed crystal. We found that a small addition of Ag enlarged the temperature window for stable single-grain growth, since the decomposition temperature of Gd123 decreased with Ag addition. However, Ag addition of more than 5 wt.% restricted the temperature window due to the melting of Nd123 seed crystal which reacted with Ag. The employment of a double layered precursor, which composed of two layers with and without Ag, solved the problem of the diffusion of Ag into the seed crystal. As a result, single grain Gd-Ba-Cu-O/Ag bulks could be obtained in a wide temperature window.
| Original language | English |
|---|---|
| Pages (from-to) | 468-472 |
| Number of pages | 5 |
| Journal | Physica C: Superconductivity and its applications |
| Volume | 392-396 |
| Issue number | PART 1 |
| DOIs | |
| Publication status | Published - 2003 Oct |
| Event | Proceedings of the 15th International Symposium on Superconduc - Yokohama, Japan Duration: 2002 Nov 11 → 2002 Nov 13 |
Keywords
- Ag
- Bulk
- Cold-seeding
- Gd-Ba-Cu-O
- Melt processing
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering