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Spontaneous Stoichiometry Change in Single Crystals of Superconducting (Ba1-xKx)Fe2As2 Grown by a Rapid-Heating Sn-Flux Method SCIE SCOPUS
- Title
- Spontaneous Stoichiometry Change in Single Crystals of Superconducting (Ba1-xKx)Fe2As2 Grown by a Rapid-Heating Sn-Flux Method
- Authors
- Reuvekamp, P; Razavi, FS; Hoch, C; Kim, JS; Kremer, RK; Simon, A
- Date Issued
- 2009-05
- Publisher
- Springer
- Abstract
- To prevent the loss of K in growing single crystals of Ba1-x K (x) Fe2As2 we developed a rapid-heating Sn-flux method. Large single crystals with the optimal superconducting transition temperature T (C)a parts per thousand 38 K were obtained and their structural, chemical and superconducting properties were investigated. Additionally, the effect of post-growth annealing on these crystals at different temperatures was examined. Scanning electron microscopy microprobe studies on a crystal with the composition goal of Ba0.25K0.75Fe2As2 revealed a well defined separation of two phases with compositions that are suggestive of rational ratios of the K and Ba content.
- Keywords
- Iron arsenide superconductors; Crystal growth; Stoichiometry
- ISSN
- 1557-1939
- Article Type
- Article
- Citation
- JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, vol. 22, no. 4, page. 353 - 356, 2009-05
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Related Researcher
- 김준성KIM, JUN SUNG
- Dept of Physics