Dielectric properties of silver-doped nanoporous silicate glasses in the temperature range between –50 and +250°C

Resumo

The results of measuring dielectric parameters of nanoporous silicate glasses with a nanopore size of 3.5 and 25.7 nm, either doped with silver or not, in the temperature range between–50 and +250°C and the frequency range of 0.1–10⁶ Hz are reported. It is demonstrated that when silver nanoparticles are formed in glass pores, some silver remains in the form of subnanosized molecular clusters Ag_n and molecular complexes Ag_n–(OH)_m. The key dielectric properties of the relaxation centers are determined for different temperature ranges.