Single Crystal Growth and Characterization of the Iron-Based Superconductor KFe2As2 Synthesized by KAs Flux Method
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概要
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Centimeter-sized platelet single crystals of KFe2As2 were grown using a self-flux method. An encapsulation technique using a commercial stainless steel container allowed the stable crystal growth to last for more than 2 weeks. Ternary K–Fe–As systems with various starting compositions were examined to determine the optimal growth conditions. The employment of KAs flux led to the growth of large single crystals with a typical size of as large as $15 \times 10 \times 0.4$ mm3. The grown crystals exhibit a sharp superconducting transition at 3.4 K with the transition width 0.2 K, as well as the very large residual resistivity ratio exceeding 450, evidencing the good sample quality.
- 2010-12-15
著者
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EISAKI Hiroshi
National Institute of Advanced Industrial Science and Technology
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LEE Chul-Ho
National Institute of Advanced Industrial Science and Technology
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KIHOU Kunihiro
National Institute of Advanced Industrial Science and Technology
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Iyo Akira
National Inst. Advanced Industrial Sci. And Technol. (aist) Ibaraki Jpn
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Nakajima Masamichi
Department Of Cardiology Tokyo Women's Medical University
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Kohori Yoh
Department Of Material Physics Faculty Of Engineering Science Osaka University
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TOMIOKA Yasuhide
National Institute of Advanced Industrial Science and Technology (AIST)
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Ito Toshimitsu
National Institute For Advanced Industrial Science And Technology
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SAITO Taku
Department of Mechanical Engineering, Faculty of Engineering and Resource Science, Akita University
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Uchida Shin-ichi
Department Of Applied Physics University Of Tokyo
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Fukazawa Hideto
Department Of Physics Chiba University
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Kihou Kunihiro
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
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Ishida Shigeyuki
Department of Physics, University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
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Eisaki Hiroshi
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
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Tomioka Yasuhide
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
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Lee Chul-Ho
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
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