標題: New quinternary selenides: Syntheses, characterizations, and electronic structure calculations
作者: Chung, Ming-Yan
Lee, Chi-Shen
應用化學系
Department of Applied Chemistry
關鍵字: Selenide;Quinternary;Site preference;Alkaline earth metal;Rare earth metal
公開日期: 1-六月-2013
摘要: Five quintemary selenides, Sr2.63Y0.37Ge0.63Sb2.32Se8 (I), Sr2.6La0.37Ge0.63Sb2.37Se8 (II) Sr2.71La0.29Sn0.77- Bi2.23Se8 (III), Ba2.67La0.33Sn0.67Sb2.33Se8 (IV), and Ba2.67La0.33Sn0.67Bi2.33Se8 (V), were synthesized by solid-state reaction in fused silica tubes. These compounds are isostructural and crystallize in the Sr3GeSb2Se8 structural-type, which belongs to the orthorhombic space group Pnma (no. 62). Three structural units, (1)(infinity)[MSe3], (1)(infinity)[M4Se10] (M=Tt, Pn) and M' (M'=groups II and III element), comprise the entire one-dimensional structure, separated by M'. Measurements of electronic resistivity and diffused reflectance suggest that IV and V have semiconducting properties. Electronic structure calculations confirm the site preferences of Sr/La element discovered by crystal structure refinement. (C) 2013 Elsevier Inc. All rights reserved.
URI: http://dx.doi.org/10.1016/j.jssc.2013.03.025
http://hdl.handle.net/11536/22340
ISSN: 0022-4596
DOI: 10.1016/j.jssc.2013.03.025
期刊: JOURNAL OF SOLID STATE CHEMISTRY
Volume: 202
Issue: 
起始頁: 154
結束頁: 160
顯示於類別:期刊論文


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  1. 000319845300026.pdf