Abstract
The crossover from a frequency independent to a frequency dependent ac response has been studied in glasses with the composition 37.2Na 2O-12.8CaO 5 · 50P 2O 5 and 30Na 2O-5CaO-7.5Al 2O 3-57.5P 2O 5 (mol%) containing 5 × 10 −3 ≤ mol% Ag 2O ≤ 5 × 10 −1. Recently, we have established that in these glasses the diffusion coefficient of guest silver ions varies in space. In this case, as a first approximation, the diffusion coefficient may be considered as a constant within regions whose size is no less than 10 nm across. We assume that the diffusion of sodium ions can be given by the D( r) coefficient with the same spatial dispersion as that of silver ions. It is demonstrated that the frequency dependence of ac response is in fair agreement with the assumption.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
