Structural and Physical Properties of AsxSe100-x Glasses  

作　　者：房明磊 许峰 魏文猴 杨志勇 

机构地区：[1]College of Science, Anhui University of Science and Technology, Huainan 232001 [2]The Centre for 3D Printing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714 [3]School of Physics and Electronic Engineering, 3iangsu Normal University, Xuzhou 221116

出　　处：《Chinese Physics Letters》2014年第6期140-143,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 61205207.

摘　　要：We prepare the samples of AsxSe100-x glasses with x = 20, 31, 40 and 50, and measure the glass-transition temperatures Tg, the density and elastic, and optical properties of the glasses. The density, elastic constants and third optical nonlinearity coefficient are found to exhibit the maximal values for the As40Se6o composition. Analysis of x-ray photoelectron spectra of these AsxSe100-x glasses indicate that the chemically stoichiometric As40Se60 consists of perfect corner-sharing pyramidal AsSe3/2 units, while the others contain defect bonds such as As-As and Sere. The optical nonlinearity does not correlate with the concentration of Se, contrary to the report by Quemard et al for Ge-Se Masses.We prepare the samples of AsxSe100-x glasses with x = 20, 31, 40 and 50, and measure the glass-transition temperatures Tg, the density and elastic, and optical properties of the glasses. The density, elastic constants and third optical nonlinearity coefficient are found to exhibit the maximal values for the As40Se6o composition. Analysis of x-ray photoelectron spectra of these AsxSe100-x glasses indicate that the chemically stoichiometric As40Se60 consists of perfect corner-sharing pyramidal AsSe3/2 units, while the others contain defect bonds such as As-As and Sere. The optical nonlinearity does not correlate with the concentration of Se, contrary to the report by Quemard et al for Ge-Se Masses.

分 类 号：O625.12[理学—有机化学] TQ171.1[理学—化学]