Electrodeposition as a new route to synthesize superconducting FeSe

Satoshi Demura; Hiroyuki Okazaki; Toshinori Ozaki; Hiroshi Hara; Yasuna Kawasaki; Keita Deguchi; Tohru Watanabe; Saleem James Denholme; Yoshikazu Mizuguchi; Takahide Yamaguchi; Hiroyuki Takeya; Yoshihiko Takano

doi:10.1016/j.ssc.2012.10.020

arXiv · 1205.6378

Electrodeposition as a new route to synthesize superconducting FeSe

Satoshi Demura·Hiroyuki Okazaki·Toshinori Ozaki·Hiroshi Hara·Yasuna Kawasaki·Keita Deguchi·Tohru Watanabe·Saleem James Denholme·Yoshikazu Mizuguchi·Takahide Yamaguchi·Hiroyuki Takeya·Yoshihiko Takano

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Abstract

We have successfully synthesized FeSe films by the electrochemical deposition in the electrolyte containing FeCl_{2}\cdot4H_{2}O, SeO_{2} and Na_{2}SO_{4}. The composition ratio of Fe and Se was controlled by the synthesis voltage and pH value. The FeSe film with the composition ratio of Fe : Se = 1 : 1 is fabricated at a voltage of -0.9 V and pH 2.1 in our electrochemical deposition. This sample has a highly crystalline tetragonal FeSe structure and exhibits a superconducting transition at 8.1 K, comparable to FeSe synthesized by other methods.

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Satoshi Demura, Hiroyuki Okazaki, Toshinori Ozaki, Hiroshi Hara, Yasuna Kawasaki, Keita Deguchi, Tohru Watanabe, Saleem James Denholme, Yoshikazu Mizuguchi, Takahide Yamaguchi, Hiroyuki Takeya, Yoshihiko Takano. 2012-05-29. Electrodeposition as a new route to synthesize superconducting FeSe. https://doi.org/10.1016/j.ssc.2012.10.020

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