Heat treatment effects on the superconducting properties of Ag-doped SrKFeAs compounds
Science China: Physics, Mechanics and Astronomy, ISSN: 1674-7348, Vol: 53, Issue: 7, Page: 1187-1193
2010
- 3Citations
- 13Captures
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Article Description
The superconducting properties of polycrystalline SrK FeAs were strongly influenced by Ag doping (Supercond. Sci. Technol. 23 (2010) 025027). Ag addition is mainly dominated by silver diffusing, so the annealing process is one of the essential factors to achieve high quality Ag doped SrKFe As. In this paper, the optimal annealing conditions were studied for Ag doped SrKFeAs bulks prepared by a one-step solid reaction method. It is found that the annealing temperature has a strong influence on the superconducting properties, especially on the critical current density J. As a result, higher heat treatment temperature (∼900°C) is helpful in diffusing Ag and reducing the impurity phase gathered together to improve the grain connectivity. In contrast, low-temperature sintering is counterproductive for Ag doped samples. These results clearly suggest that annealing at ∼900°C is necessary for obtaining high J Ag-doped samples. © 2010 Science China Press and Springer-Verlag Berlin Heidelberg.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=77955515208&origin=inward; http://dx.doi.org/10.1007/s11433-010-3211-2; http://link.springer.com/10.1007/s11433-010-3211-2; http://link.springer.com/content/pdf/10.1007/s11433-010-3211-2; http://link.springer.com/content/pdf/10.1007/s11433-010-3211-2.pdf; http://link.springer.com/article/10.1007/s11433-010-3211-2/fulltext.html; http://www.springerlink.com/index/10.1007/s11433-010-3211-2; http://www.springerlink.com/index/pdf/10.1007/s11433-010-3211-2; https://dx.doi.org/10.1007/s11433-010-3211-2; https://link.springer.com/article/10.1007/s11433-010-3211-2
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