Growth and characterization of (La,Ce)OBiS2 single crystals
Yuji Hanada, Masanori Nagao, Akira Miura, Yuki Maruyama, Satoshi, Watauchi, Yoshihiko Takano, Isao Tanaka
TL;DR
This paper reports the successful growth of (La,Ce)OBiS2 single crystals using CsCl flux, revealing their superconducting properties and how Ce content influences their structure and transition temperature.
Contribution
It introduces a new method for growing (La,Ce)OBiS2 single crystals and characterizes their superconducting and structural properties.
Findings
Crystals grown with sizes of 0.5-2.0 mm
Superconducting transition temperature increases with Ce content
Ce valence state is mixed (Ce3+ and Ce4+)
Abstract
(La,Ce)OBiS2 single crystals are successfully grown using CsCl flux. The obtained single crystals have a plate-like shape with a size of 0.5-2.0 mm and a well-developed ab-plane. The thickness of the crystals increases with a decrease in the Ce content. The (La,Ce)OBiS2 single crystals exhibit superconducting properties. Moreover, the superconducting transition temperature increases with an increase in the Ce content. The obtained (La,Ce)OBiS2 single crystals exhibit a tetragonal structure and the valence state of Ce in the crystals is determined to be mixed with Ce3+ and Ce4+ based on X-ray absorption fine structure spectroscopy.
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