J. Phys. IV France 7 (1997) C2-1001-C2-1002
EXAFS of Liquid As-Te MixturesT. Miyanaga1, H. Hoshino2, H. Ikemoto3, M. Yuza1, I. Yamamoto2 and H. Endo4
1 Faculty of Science, Hirosaki University, Hirosaki 036, Japan
2 Faculty of Education, Hirosaki University Hirosaki 036, Japan
3 Faculty of Science, Toyama University Toyama 930, Japan
4 Faculty of Engineering, Fukui Institute of Technology, Fukui 910, Japan
The EXAFS measurements on As and Te K-edges of liquid As2Te3 have been carried out in the temperature range including the supercooled liquid state down to 330° C. By curve-fitting analyses with two-shell model the bond lengths and the coordination numbers were determined. It is suggested that As atoms within a chain bridge neighbouring chains with decreasing temperature and the network structure with three-fold coordinated As and two-fold coordinated Te is formed near the glass transition temperature.
© EDP Sciences 1997