Abstract
Superconducting properties of melt-processed (SmxEu1-x)Ba2Cu3O7-δ were investigated by varying the Sm/Eu ratio in the initial composition while maintaining the mixture of RE123 and RE2BaO4 in a molar ratio of 1:0.15 along the REBa2Cu3O7-δ-RE2BaO4 line (RE = Sm and Eu). A suppression of the height of peak effect and the shift of the peak position to higher fields concurred with increasing Eu concentration. Such a systematical variation was ascribed to a narrowing compositional fluctuation. Experiments also unveiled a dramatic enhancement of the irreversibility line for the sample with the higher peak field, which supported the fact that chemical modulation was a dominant pinning in high fields.
Original language | English |
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Pages (from-to) | 692-696 |
Number of pages | 5 |
Journal | Physica C: Superconductivity and its applications |
Volume | 378-381 |
Issue number | PART 1 |
DOIs | |
Publication status | Published - 2002 Oct 1 |
Externally published | Yes |
Keywords
- Compositional fluctuation
- Irreversibility line
- Peak effect
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering