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Superconductivity in Fe1+dTe0.9Se0.1 induced by deintercalation of excess Fe using alcoholic beverage treatment
K. Deguchi, S. Demura, H. Hara +8
Superconductivity in polycrystalline Fe1+dTe0.9Se0.1 was enhanced by heating in alcoholic beverages. We found that part of the excess Fe was deintercalated from the interlayer site…
Evolution of superconductivity in LaO1-xFxBiS2 prepared by high pressure technique
K. Deguchi, Y. Mizuguchi, S. Demura +10
Novel BiS2-based superconductors LaO1-xFxBiS2 prepared by the high pressure synthesis technique were systematically studied. It was found that the high pressure annealing strongly…
BiS2 - based superconductivity in F-substituted NdOBiS2
Satoshi Demura, Yoshikazu Mizuguchi, Keita Deguchi +12
We have successfully synthesized a new BiS2-based superconductor NdOBiS2 with F-doping. This compound is composed of superconducting BiS2 layers and blocking NdO layers, which indi…
Transport properties of the new Fe-based superconductor KxFe2Se2 (Tc = 33 K)
Yoshikazu Mizuguchi, Hiroyuki Takeya, Yasuna Kawasaki +4
We synthesized the new Fe-based superconductor K0.8Fe2Se2 single crystals. The obtained single crystal exhibited a sharp superconducting transition, and the onset and zero-resistiv…
Fabrication of the iron-based superconducting wire using Fe(Se, Te)
Yoshikazu Mizuguchi, Keita Deguchi, Shunsuke Tsuda +4
We have fabricated the Fe(Se, Te) superconducting wire by a special process based on a powder-in-tube method. The pure Fe tube plays the role of not only the sheath but also the ra…
Substitution Effects on FeSe Superconductor
Y. Mizuguchi, F. Tomioka, S. Tsuda +2
We have investigated the effect of atomic substitutions in the FeSe system, which exhibits the simplest crystal structure among the iron-based superconductors. An enhancement of th…