Abstract
The effects of oxygen content on the superconducting transition temperatures, Tc, and magnetic properties of melt-textured LRE123 (LRE = Nd, Sm) superconductors were studied. The oxygen content could be varied by changing the annealing temperature, Ta, in that the oxygen deficiency, δ, monotonically decreased with decreasing the Ta from 600°C to 300°C. A further decrease of Ta to 275°C showed no appreciable change. In both systems the highest Tc was obtained for the samples annealed at 300°C. Magnetic properties were also strongly dependent on the oxygen content, showing that the control of oxygen content is critical for achieving good pinning properties.
Original language | English |
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Pages (from-to) | 187-191 |
Number of pages | 5 |
Journal | Physica C: Superconductivity and its applications |
Volume | 278 |
Issue number | 3-4 |
DOIs | |
Publication status | Published - 1997 May 1 |
Externally published | Yes |
Keywords
- Critical current density
- Irreversibility field
- LRE123
- Melt-processing
- Oxygen deficiency
- Peak effect
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering