| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Structural and Physical Properties of AsxSe100?x Glasses |
| FANG Ming-Lei1, XU Feng1, WEI Wen-Hou2, YANG Zhi-Yong3** |
1College of Science, Anhui University of Science and Technology, Huainan 232001
2The Centre for 3D Printing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714
3School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116
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| Cite this article: |
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FANG Ming-Lei, XU Feng, WEI Wen-Hou et al 2014 Chin. Phys. Lett. 31 066101 |
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Abstract 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 As40Se60 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 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.
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Published: 26 May 2014
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| PACS: |
61.43.Fs
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(Glasses)
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62.20.D-
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(Elasticity)
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78.20.-e
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(Optical properties of bulk materials and thin films)
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82.80.Pv
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(Electron spectroscopy (X-ray photoelectron (XPS), Auger electron spectroscopy (AES), etc.))
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