Fast ion conducting (FIC) AgI-based borate glasses xAgI:(1−x)[Ag2O.nB2O3] (n=1, 2) were studied by means of 109Ag solid-state NMR, impedance spectroscopy (IS) and molecular dynamics (MD) simulations. Diffusion coefficients in the range 10−8–10−10 cm2/s were obtained from conductivity data by means of the Nernst–Einstein equation. The activation energies for NMR line narrowing and d.c. conductivity differ by a factor of approximately ∼3. Standard (ST) and non-equilibrium (NE) MD investigations suggest that this difference is due to the effect of cooperative processes.
Mustarelli, P., Tomasi, C., Infante Garcia Maria Del, P., Magistris, A. (2006). A NMR, Conductivity and Molecular Dynamics Study of AgI-Ag2O-B2O3 Glasses,. EUROPEAN JOURNAL OF GLASS SCIENCE AND TECHNOLOGY. PART B, PHYSICS AND CHEMISTRY OF GLASSES, 47(4), 484-488.
A NMR, Conductivity and Molecular Dynamics Study of AgI-Ag2O-B2O3 Glasses,
Mustarelli Piercarlo;
2006
Abstract
Fast ion conducting (FIC) AgI-based borate glasses xAgI:(1−x)[Ag2O.nB2O3] (n=1, 2) were studied by means of 109Ag solid-state NMR, impedance spectroscopy (IS) and molecular dynamics (MD) simulations. Diffusion coefficients in the range 10−8–10−10 cm2/s were obtained from conductivity data by means of the Nernst–Einstein equation. The activation energies for NMR line narrowing and d.c. conductivity differ by a factor of approximately ∼3. Standard (ST) and non-equilibrium (NE) MD investigations suggest that this difference is due to the effect of cooperative processes.
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