The diffusivity of 110mAg in Pb0.95Sr0.05(Ti0.47Zr0.53)-1wt%Nb2O5 sintered ceramic was measured by using a tracer-sectioning method at temperatures of between 500 and 700C. It was found that the diffusion profiles had a complex form, and comprised 2 parts. Depending upon the portion which was analyzed, the diffusivity could be described by:

D (cm2/s) = 0.51 exp[-121(kJ/mol)/RT]

or

D (cm2/s) = 7.6 x 10-6 exp[-27(kJ/mol)/RT]

M.V.Slinkina, G.I.Dontsov, A.S.Zhukovskaya, V.A.Golovnin, S.A.Gromov. Izvestiya Akademii Nauk SSSR - Neorganicheskie Materialy, 1990, 26[2], 446-7. [Inorganic Materials, 1990, 26[2], 378-9]