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Single Crystal Growth of Cuprate Superconductor (Lu$_{0.8}$Nd$_{0.2}$)Ba$_2$Cu$_4$O$_8$ by KOH Flux Method

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arxiv 1810.04936 v1 pith:W6YSCJCV submitted 2018-10-11 cond-mat.supr-con

Hiroshi Hara , Shintaro Adachi , Ryo Matsumoto , Aichi Yamashita , Hiroyuki Takeya , Yoshihiko Takano This is my paper · ORCID
classification cond-mat.supr-con
keywords singlecrystalfluxmethodammmanalysisc-axiscombination
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abstract

Single crystals of Nd-substituted LuBa$_2$Cu$_4$O$_8$ were successfully grown by the KOH flux method. The single phase of Lu$_{1-x}$Nd$_x$Ba$_2$Cu$_4$O$_8$ [(Lu,Nd)124] formed at $x = 0.2$. The compound crystallized as orthorhombic Ammm structure with lattice constants of a = 3.835(3) {\AA}, b = 3.879(2) {\AA} and c = 27.195(6) {\AA}. Single crystal structural analysis demonstrated that the Nd ion partially occupied the Lu site. The (Lu,Nd)124 exhibited the superconducting transition at ~75 K in the magnetic susceptibility and resistivity. The $T_c$ and the c-axis of the (Lu,Nd)124 corresponded to Tm124. These results indicate that RE124 equivalent to the one composed of single RE element is obtained by combination of two RE elements.

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