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arXiv · 1003.2059

Evolution of superconductivity by oxygen annealing in FeTe0.8S0.2

Yoshikazu Mizuguchi·Keita Deguchi·Shunsuke Tsuda·Takahide Yamaguchi·Yoshihiko Takano
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Abstract

Oxygen annealing dramatically improved the superconducting properties of solid-state-reacted FeTe0.8S0.2, which showed only a broad onset of superconducting transition just after the synthesis. The zero resistivity appeared and reached 8.5 K by the oxygen annealing at 200\degree C. The superconducting volume fraction was also enhanced from 0 to almost 100%. The lattice constants were compressed by the oxygen annealing, indicating that the evolution of bulk superconductivity in FeTe0.8S0.2 was correlated to the shrinkage of lattice.

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Yoshikazu Mizuguchi, Keita Deguchi, Shunsuke Tsuda, Takahide Yamaguchi, Yoshihiko Takano. 2010-03-13. Evolution of superconductivity by oxygen annealing in FeTe0.8S0.2. https://doi.org/10.1209/0295-5075%2F90%2F57002

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