抄録
Current densities (Formula presented) and volume pinning forces (Formula presented) are obtained in a wide temperature (Formula presented) and field range (Formula presented) on different (Formula presented) samples. Above 60 K a good scaling of the volume pinning force (Formula presented) versus the reduced field (Formula presented) can be established. The scaled pinning curves are compared to several theoretical predictions. Experimental evidence for strong pinning at extended superconducting defects (interaction volume (Formula presented)) is given. These defects are ascribed to spatial composition fluctuations found in light rare-earth superconductors, providing a scatter of the transition temperature (Formula presented) Such a pinning mechanism is especially important for applications of high-(Formula presented) superconductors operating at (Formula presented).
| 本文言語 | English |
|---|---|
| ページ（範囲） | 2863-2867 |
| ページ数 | 5 |
| ジャーナル | Physical Review B - Condensed Matter and Materials Physics |
| 巻 | 58 |
| 号 | 5 |
| DOI | |
| 出版ステータス | Published - 1998 |
| 外部発表 | はい |
ASJC Scopus subject areas
- 電子材料、光学材料、および磁性材料
- 凝縮系物理学