Sulfur annealing effect for superconductivity in iron chalcogenide compounds

K. Deguchi; A. Yamashita; T. Yamaki; H. Hara; S. Demura; S. J. Denholme; M. Fujioka; H. Okazaki; H. Takeya; T. Yamaguchi; Y. Takano

doi:10.1063/1.4864417

arXiv · 1308.5642

Sulfur annealing effect for superconductivity in iron chalcogenide compounds

K. Deguchi·A. Yamashita·T. Yamaki·H. Hara·S. Demura·S. J. Denholme·M. Fujioka·H. Okazaki·H. Takeya·T. Yamaguchi·Y. Takano

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Abstract

We discovered a novel annealing method for Fe-chalcogenide superconductors. It was found that sulfur annealing deintercalated excess Fe via formation of FeS2. Due to its specifics, sulfur annealing is applicable when preparing Fe-chalcogenide-based wires or cables.

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K. Deguchi, A. Yamashita, T. Yamaki, H. Hara, S. Demura, S. J. Denholme, M. Fujioka, H. Okazaki, H. Takeya, T. Yamaguchi, Y. Takano. 2013-08-26. Sulfur annealing effect for superconductivity in iron chalcogenide compounds. https://doi.org/10.1063/1.4864417

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