Growth and physical properties of Ce(O,F)Sb(S,Se)2 single crystals with site-selected chalcogen atoms

Masanori Nagao; Masashi Tanaka; Akira Miura; Miho Kitamura; Koji Horiba; Satoshi Watauchi; Yoshihiko Takano; Hiroshi Kumigashira; Isao Tanaka

doi:10.1016/j.ssc.2018.12.004

arXiv · 1812.04785

Growth and physical properties of Ce(O,F)Sb(S,Se)2 single crystals with site-selected chalcogen atoms

Masanori Nagao·Masashi Tanaka·Akira Miura·Miho Kitamura·Koji Horiba·Satoshi Watauchi·Yoshihiko Takano·Hiroshi Kumigashira·Isao Tanaka

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Abstract

Ce(O,F)Sb(S,Se)2 single crystals were successfully grown using a CsCl/KCl flux method. The obtained crystals have a plate-like shape with the typical size of 1-2 mm and well-developed ab-plane, which enables X-ray single crystal structural analysis. The Ce(O,F)Sb(S,Se)2 crystallizes in a monoclinic space group, P21/m, with lattice parameters of a = 4.121(7) A, b = 4.109(7) A, c = 13.233(15) A, beta = 97.94(7) deg. It is composed of alternate stacking of Ce-(O,F) and Sb-SSe layers, and the Sb-SSe layer includes selective occupation of Se atoms in its in-plane site. The valence state of Ce is estimated to be Ce3+ by X-ray absorption fine spectroscopy analysis. The single crystals show an insulating behavior, and a magnetic ordering around 6 K.

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Masanori Nagao, Masashi Tanaka, Akira Miura, Miho Kitamura, Koji Horiba, Satoshi Watauchi, Yoshihiko Takano, Hiroshi Kumigashira, Isao Tanaka. 2018-12-12. Growth and physical properties of Ce(O,F)Sb(S,Se)2 single crystals with site-selected chalcogen atoms. https://doi.org/10.1016/j.ssc.2018.12.004

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