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arXiv · 2308.08223

Growth of millimeter-sized high-quality CuFeSe$_2$ single crystals by the molten salt method and study of their semiconducting behavior

Mingwei Ma·Binbin Ruan·Menghu Zhou·Yadong Gu·Qingxin Dong·Qingsong Yang·Qiaoyu Wang·Lewei Chen·Yunqing Shi·Junkun Yi·Genfu Chen·Zhian Ren
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Abstract

An eutectic AlCl$_3$/KCl molten salt method in a horizontal configuration was employed to grow millimeter-sized and composition homogeneous CuFeSe$_2$ single crystals due to the continuous growth process in a temperature gradient induced solution convection. The typical as-grown CuFeSe$_2$ single crystals in cubic forms are nearly 1.6$\times$1.2$\times$1.0 mm3 in size. The chemical composition and homogeneity of the crystals was examined by both inductively coupled plasma atomic emission spectroscopy and energy dispersive spectrometer with Cu:Fe:Se = 0.96:1.00:1.99 consistent with the stoichiometric composition of CuFeSe$_2$. The magnetic measurements suggest a ferrimagnetic or weak ferromagnetic transition below T$_C$ = 146 K and the resistivity reveals a semiconducting behavior and an abrupt increase below T$_C$.

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Mingwei Ma, Binbin Ruan, Menghu Zhou, Yadong Gu, Qingxin Dong, Qingsong Yang, Qiaoyu Wang, Lewei Chen, Yunqing Shi, Junkun Yi, Genfu Chen, Zhian Ren. 2023-08-16. Growth of millimeter-sized high-quality CuFeSe$_2$ single crystals by the molten salt method and study of their semiconducting behavior. https://doi.org/10.1016/j.jcrysgro.2023.127398

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