Synthesis, structural characterization and optical properties of new compounds: Centrosymmetric Ba2GaMQ5 (M=Sb,Bi; Q=Se,Te), Ba2InSbTe5 and noncentrosymmetric Ba2InSbSe5

被引：28
|
作者：
Hao, Wenyu [1 ,2 ,3 ]
Mei, Dajiang [1 ,2 ,3 ]
Yin, Wenlong [1 ,2 ,3 ]
Feng, Kai [1 ,2 ,3 ]
Yao, Jiyong [1 ,2 ]
Wu, Yicheng [1 ,2 ]
机构：
[1] Chinese Acad Sci, Tech Inst Phys & Chem, Ctr Crystal Res & Dev, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Funct Crystals & Laser Technol, Beijing 100190, Peoples R China
[3] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 2013年 / 198卷
基金：
中国国家自然科学基金;
关键词：
Selenides; Tellurides; Synthesis; Crystal structure; SHG; BISMUTH SULFIDES; THERMOELECTRIC PROPERTIES; CRYSTAL; GE; SI; SERIES; LAYER; EARTH; SE; SN;
D O I：
10.1016/j.jssc.2012.09.034
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The six compounds Ba(2)GaMQ(5) (M=Sb,Bi; Q=Se,Te) and Ba(2)InSbQ(5) (Q=Se,Te) have been synthesized for the first time. Ba(2)GaMQ(5) (M=Sb,Bi; Q=Se,Te) and Ba2InSbTe5 crystallize in the centrosymmetric space group Pnma, while Ba2InSbSe5 belongs to the noncentrosymmetric polar space group Cmc2(1). The structures of the six new compounds contain infinite (1)(infinity)[MM'Q(5)](4-) anionic chains built by MQ(4) (M'=Ga,In) tetrahedra and heavily distorted M'Q(6) (M'=Sb,Bi) octahedra. Ba2InSbSe5 possesses a band gap of 1.92(5) eV and exhibits a weak powder second harmonic generation signal using the 2090 nm laser as fundamental wavelength. (C) 2012 Elsevier Inc. All rights reserved.
引用
收藏
页码：81 / 86
页数：6
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