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Published on: December 29, 2016
Stabilization by a divalent transition metal in lead indium quaternary selenide, Fe(0.47)Pb(8.04)In(17.37)Se(34), and
Yoshitaka Matsushita1, Kazumasa Sugiyama, Yutaka Ueda
1Institute for Solid State Physics (ISSP), University of Tokyo, 5-1-5 Kashiwano-ha, Kashiwa, Chiba 277-8581, Japan. chaos_ym@yahoo.co.jp
Abstract:
Single crystals of the first M-Pb-In-Se quaternary selenide, Fe(0.47)Pb(8.04)In(17.37)Se34, with the structure stabilized by a divalent transition metal (M = Fe), have been grown by a solid-state reaction. The Fe(II) ions partially occupy at the In sites with various Fe/In ratios. Thus, a new crystal structure is evolved by partially occupied minor Fe atoms at In sites. A part of the In atoms shows remarkably distorted octahedral coordination. This compound shows relatively high conductivity (approximately 40 S/m at 300 K) with a narrow-band-gap-type semiconducting property (Ea = 0.078 eV).
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