Effect of In-Sn Ordering on Semiconducting Properties in InSnCo3S2 - X-ray, 119Sn Mossbauer Spectroscopy, and DFT Studies

被引:27
作者
Rothballer, Jan [1 ]
Bachhuber, Frederik [1 ]
Pielnhofer, Florian [1 ]
Schappacher, Falko M. [2 ]
Poettgen, Rainer [2 ]
Weihrich, Richard [1 ]
机构
[1] Univ Regensburg, Inst Anorgan Chem, D-93040 Regensburg, Germany
[2] Univ Munster, Inst Anorgan & Analyt Chem, D-48149 Munster, Germany
关键词
Materials science; Semiconductors; Moessbauer spectroscopy; Density functional calculations; Electric field gradient; Indium; Tin; Cobalt; Half antiperovskite; HALF-ANTIPEROVSKITES; ISOMER-SHIFTS; TIN; PHASES; NI; TL;
D O I
10.1002/ejic.201200892
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The crystallographic and electronic structure of shandite-type InSnCo3S2 was reinvestigated. Single-crystal and powder X-ray diffraction, 119Sn Mossbauer spectroscopy, and DFT studies focused on the relation between the In-Sn ordering and a recently predicted semiconductor-to-metal transition. One aim of the combined experimental and theoretical approach was to show how the occupation of Sn and In sites causes structural distortions. The second aim was to point out effects on the electronic structure and the relative stability of structural variants with respect to In-Sn ordering. The interpretation of both X-ray diffraction and Mossbauer spectroscopy data by DFT calculations helped to understand the effects from a nonlocal and a local point of view. This is a starting point of materials design for various applications.
引用
收藏
页码:248 / 255
页数:8
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