Nonexponential dynamics in porous glasses

被引:2
作者
Gutina, A
Rysiakiewicz-Pasek, E
Feldman, Y
机构
[1] Jerusalem Jewish Univ, Dept Appl Phys, IL-91904 Jerusalem, Israel
[2] Wroclaw Tech Univ, Inst Phys, PL-50370 Wroclaw, Poland
关键词
D O I
10.1023/A:1011380529876
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The dielectric relaxation properties of porous glasses prepared from sodium borosilicate glasses are studied by dielectric spectroscopy over a wide range of frequencies (20 Hz-1 MHz) and temperatures (-100-300 degreesC). The dielectric behavior reflecting the geometric disorder is analyzed within the models describing the non-Debye slowly damped dynamics. It is found that the dielectric response is very sensitive to microstructural and mesostructural features of the porous matrix and the properties of a material filling pores. The response contains information on the dynamics of water molecules in pores, which accounts for the interaction of these molecules with the pore surface.
引用
收藏
页码:394 / 399
页数:6
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