抄録
We report positional dependence of superconducting properties in a Y-Ba-Cu-O single grain fabricated with a top seeded melt growth technique. It is found that the distributions of the second phase of Y2BaCuO5 (Y211) inclusions and the magnetic properties vary with position in a large sample. The peak effect is observed in the region where the volume fraction of the Y211 particles is low. The optimum oxygen-annealing temperature for achieving high critical current is also dependent on the position in a large bulk. The regional distributions of the microstructure and the properties are not arbitrarily scattered but reasonably depend on the spatial distributions of growth rate and growth direction in a large grain.
本文言語 | English |
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ページ(範囲) | 465-472 |
ページ数 | 8 |
ジャーナル | Physica C: Superconductivity and its applications |
巻 | 383 |
号 | 4 |
DOI | |
出版ステータス | Published - 2003 1 1 |
外部発表 | はい |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering