Structural and Physical Properties of Asx 100?x Glasses
FANG Ming-Lei1 , XU Feng1 , WEI Wen-Hou2 , YANG Zhi-Yong3**
1 College of Science, Anhui University of Science and Technology, Huainan 2320012 The Centre for 3D Printing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 4007143 School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116
Abstract ：We prepare the samples of Asx 100?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 As40 Se60 composition. Analysis of x-ray photoelectron spectra of these Asx 100?x glasses indicate that the chemically stoichiometric As40 Se60 consists of perfect corner-sharing pyramidal AsSe3/2 units, while the others contain defect bonds such as As–As and Se–Se. The optical nonlinearity does not correlate with the concentration of Se, contrary to the report by Quemard et al for Ge–Se glasses.
出版日期: 2014-05-26
:
61.43.Fs
(Glasses)
62.20.D-
(Elasticity)
78.20.-e
(Optical properties of bulk materials and thin films)
82.80.Pv
(Electron spectroscopy (X-ray photoelectron (XPS), Auger electron spectroscopy (AES), etc.))
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2014, Vol. 31 
