Proton Transfer in Proton Glasses
Proton intrabond transfer in Osingle bondH⋯O bonds is the mechanism for dynamic behavior of rubidium/ammonium dihydrogenphosphate mixed crystals. Because of strong proton-proton interactions, such transfer is associated with thermally activated creation of H3PO4-HPO4 intrinsic defect pairs, their hindered diffusion in a random-step fractal potential, and their eventual annihilation. Predictions of a model based on this behavior are compared with determinations on a 35% ammoniated crystal by Courtens of dielectric susceptibility and of relaxation time distribution limits calculated from Brillouin scattering results.
Schmidt, V. Hugo. “Proton Transfer in Proton Glasses.” Journal of Molecular Structure 177 (July 1988): 257–264. doi:10.1016/0022-2860(88)80092-9.