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Communication

Stabilization by a Divalent Transition Metal in Lead Indium Quaternary Selenide, Fe_0.47Pb_8.04In_17.37Se₃₄, and Specific Indium Coordination

Supporting Info

Yoshitaka Matsushita,*^†^‡ Kazumasa Sugiyama,^‡ and Yutaka Ueda^†

Institute for Solid State Physics (ISSP), The University of Tokyo, 5-1-5 Kashiwano-ha, Kashiwa, Chiba 277-8581, Japan, Department of Earth & Planetary Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, and Neutron Scattering Team, Quantum Beam Center, National Institute for Material Science (NIMS), 1-1 Namiki, Tsubuka, Ibaraki, 305-0044 Japan

Inorg. Chem., 2006, 45 (17), pp 6598–6600

DOI: 10.1021/ic0611600

Publication Date (Web): July 27, 2006

To whom correspondence should be addressed. E-mail: chaos_ym@ yahoo.co.jp.

†

Institute for Solid State Physics (ISSP), The University of Tokyo.

‡

Quantum Beam Center, National Institute for Material Science (NIMS).

Abstract

Single crystals of the first M−Pb−In−Se quaternary selenide, Fe_0.47Pb_8.04In_17.37Se₃₄, 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 (40 S/m at 300 K) with a narrow-band-gap-type semiconducting property (E_a = 0.078 eV).