The migration of Ag in cold-pressed Pb0.95Sr0.05(Zr0.53Ti0.47)O3 ceramics was studied, by using radioactive tracers and sectioning, after isothermal annealing at  between 500 and 750C. It was found that the results could be described by:

D (cm2/s) = 0.83 exp[-124(kJ/mol)/RT]

The Ag thus exhibited a high diffusivity; having a coefficient of about 5 x 10-7cm2/s at 750 to 800C. This was attributed to grain boundary diffusion.

M.V.Slinkina, V.M.Zhukovskii, L.S.Ziangirova, G.I.Dontsov, A.S.Zhukovskaya, V.V.Kochetygov: Izvestiya Akademii Nauk SSSR - Neorganicheskie Materialy, 1990, 26[12], 2634-7. [Inorganic Materials, 1990, 26[12], 2266-8]