Crystal Size Improvement of Bi-based Superconducting Whiskers under Stress-controlled Condition

Sayaka Yamamoto; Ryo Matsumoto; Shintaro Adachi; Yoshihiko Takano; Hiroyuki Muto; Hiromi Tanaka

doi:10.1016/j.jcrysgro.2020.125669

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arXiv · 1911.00224

Crystal Size Improvement of Bi-based Superconducting Whiskers under Stress-controlled Condition

Sayaka Yamamoto·Ryo Matsumoto·Shintaro Adachi·Yoshihiko Takano·Hiroyuki Muto·Hiromi Tanaka

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Abstract

Using stress-controlled amorphous precursors, we have successfully grown large $Bi_{2}$$Sr_{2}$$Ca_{\textit{n}-1}$$Cu_{\textit{n}}$$O_{\textit{y}}$ (Bi-based) high-transition temperature superconducting whiskers. Especially, under a high compressive stress attained by 1 GPa pelletizing, the crystal size of a whisker was significantly enhanced up to 9.5 mm length (growth period: 96 h) which is 2.4 times larger than that of the conventional amorphous-precursors method. In addition, by using the stress-controlled precursors, the number of the obtained Bi-based whiskers were also increased by a factor of 1.8.

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Sayaka Yamamoto, Ryo Matsumoto, Shintaro Adachi, Yoshihiko Takano, Hiroyuki Muto, Hiromi Tanaka. 2019-11-01. Crystal Size Improvement of Bi-based Superconducting Whiskers under Stress-controlled Condition. https://doi.org/10.1016/j.jcrysgro.2020.125669

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