Abstract
We investigated the effect of RE2BaCuO5 (RE211) contents on the superconducting properties of melt-textured RE-Ba-Cu-O bulk superconductors (RE: Ho, Er and Y). REBa2Cu3Oy (RE123) samples containing 5-40 mol% of RE211 were fabricated with the cold-seeding method in air using an Nd123 bulk seed crystal. The superconducting properties of the Ho-Ba-Cu-O samples were strongly affected by the Ho211 content and the oxygen-annealing temperature. In the Jc-B curves of the Ho-Ba-Cu-O samples with low-Ho211 contents, the secondary peak effect was clearly observed. The peak position shifted to lower fields with increasing oxygen-annealing temperature, presumably due to an increase in oxygen-vacancies. The secondary peak effect was also found in the Er- and Y-Ba-Cu-O samples with 5 mol% of RE211.
| Original language | English |
|---|---|
| Pages (from-to) | 516-520 |
| Number of pages | 5 |
| Journal | Physica C: Superconductivity and its applications |
| Volume | 392-396 |
| Issue number | PART 1 |
| DOIs | |
| Publication status | Published - 2003 Oct |
| Externally published | Yes |
| Event | Proceedings of the 15th International Symposium on Superconduc - Yokohama, Japan Duration: 2002 Nov 11 → 2002 Nov 13 |
Keywords
- Critical current density
- Er-Ba-Cu-O
- Ho-Ba-Cu-O
- Melt processing
- Secondary peak effect
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering