Open volume study on defects of GeSz glasses by positron annihilation spectroscopy

摘要：

Defects in topologically disordered chalcogenide glasses have greatly predominated on its electrical and optical properties1,2, e.g. Photoinduced phenomenon, luminescence of rare earth-doped chalcogenide glasses. An adequate understanding of the open-volume defects in these glasses is profound to explore the correlation between its structure and electric-optical properties. Despite a variety of techniques, such as Neutron (or X-ray) diffraction3, Raman scattering4 and nuclear magnetic resonance (NMR) 5, have allowed elucidating the residual medium-range structural order of non-crystalline material, there is still a lack of techniques that is especially sensitive to nano-volume open structure of materials except positron annihilation lifetime spectroscopy (PALS) 6.

作者: Wang Bing Wang Zhu Tao Haizheng Li Hui

作者单位: Hubei Nuclear Solid Physics Key Laboratory,Department of physics,Wuhan university,Wuhan 430072,China Key Laboratory of Silicate Materials Science and Engineering,Wuhan university of Technology,Wuhan 43

会议类型: 国际会议

会议名称: 第九届国际正电子与正电子素国际会议(9th International Workshop on Positron and Positronium Chemistry)(PPC–9)

会议地点: 武汉

会议语种:英文

页码: 93

在线出版日期: 2008-05-11（万方平台首次上网日期，不代表论文的发表时间）