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Homopolar bonds in Se-rich Ge—As—Se chalcogenide glasses |
| Si-Wei Xu(许思维)1,2, Rong-Ping Wang(王荣平)2, Zhi-Yong Yang(杨志勇)3, Li Wang(王丽)1, Luther-Davies Barry2 |
1. College of Applied Sciences, Beijing University of Technology, Beijing 100124, China;
2. Laser Physics Centre, Research School of Physical Science and Engineering, Australian National University, Canberra, ACT 0200, Australia;
3. College of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China |
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Abstract We have prepared three groups of Ge-As-Se glasses in which the Se content is 5.5 mol%, 10 mol%, and 20 mol% rich, respectively. We explored the possibility of suppressing the formation of the Ge-Ge and As-As homopolar bonds in the glasses. Thermal kinetics analysis indicated that the 5.5 mol% Se-rich Ge11.5As24Se64.5 glass exhibits the minimum fragility and thus is most stable against structural relaxation. Analysis of the Raman spectra of the glasses indicated that the Ge-Ge and As-As homopolar bonds could be almost completely suppressed in 20 mol% Se-rich Ge15As14Se71 glass.
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Received: 02 December 2015
Revised: 06 January 2016
Accepted manuscript online:
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PACS:
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71.23.Cq
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(Amorphous semiconductors, metallic glasses, glasses)
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79.60.Ht
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(Disordered structures)
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81.70.Pg
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(Thermal analysis, differential thermal analysis (DTA), differential thermogravimetric analysis)
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33.20.Fb
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(Raman and Rayleigh spectra (including optical scattering) ?)
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| Fund: Project supported by the Australian Research Council (ARC) Centre of Excellence for Ultrahigh Bandwidth Device for Optical System (Project CE110001018), Australian Research Council Discovery Programs (Project DP110102753), and the Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions, China. |
Corresponding Authors:
Rong-Ping Wang
E-mail: rpw111@rsphysse.anu.edu.au
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Cite this article:
Si-Wei Xu(许思维), Rong-Ping Wang(王荣平), Zhi-Yong Yang(杨志勇), Li Wang(王丽), Luther-Davies Barry Homopolar bonds in Se-rich Ge—As—Se chalcogenide glasses 2016 Chin. Phys. B 25 057105
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