Single-crystal growth of Ba1-xKxFe2As2 by KAs self-flux method

Kunihiro Kihou, Taku Saito, Kay Fujita, Shigeyuki Ishida, Masamichi Nakajima, Kazumasa Horigane, Hideto Fukazawa, Yoh Kohori, Shin Ichi Uchida, Jun Akimitsu, Akira Iyo, Chul Ho Lee, Hiroshi Eisaki

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Abstract

Single crystals of Ba1-xKxFe2As2 with 0.15 = x = 1 have been successfully synthesized by a KAs self-flux method. The potassium (K) concentration x of the grown crystals was systematically changed by changing the mixing ratio of Ba to Fe in the starting materials. The crystals have flat surfaces corresponding to the crystallographic (001) planes, whose planar dimensions increase with decreasing thickness when x increases. The superconducting transition temperature systematically changes with x, ranging from 38K at x = 0.4 to 3.4K at x = 1.0, in good agreement with the results for polycrystalline samples.

Original languageEnglish
Article number034718
JournalJournal of the Physical Society of Japan
Volume85
Issue number3
DOIs
Publication statusPublished - Mar 15 2016

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Kihou, K., Saito, T., Fujita, K., Ishida, S., Nakajima, M., Horigane, K., Fukazawa, H., Kohori, Y., Uchida, S. I., Akimitsu, J., Iyo, A., Lee, C. H., & Eisaki, H. (2016). Single-crystal growth of Ba1-xKxFe2As2 by KAs self-flux method. Journal of the Physical Society of Japan, 85(3), [034718]. https://doi.org/10.7566/JPSJ.85.034718