Abstract
The purpose of the present Letter is the use of dielectric relaxation for investigating percolation phenomena in sol-gel glasses with different catalysts. The broadband dielectric spectroscopy method was employed to investigate glasses of fine porosity produced via the sol-gel route with different catalysts. The study was carried out in the frequency range of 20 Hz to 1 MHz and temperature interval -100°C to +150°C. The dielectric response data were analyzed both in frequency and time domains and then interpreted in terms of the various non-Debye relaxation processes. The mechanisms of the processes are discussed. One of them is associated with percolation of electric excitation along the developed fractal structure of connected pores.
| Original language | English |
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| Pages (from-to) | 7-14 |
| Number of pages | 8 |
| Journal | Chemical Physics Letters |
| Volume | 324 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - 30 Jun 2000 |