The temperature dependence of the spin lattice relaxation rates of 23Na, 35Cl, 79Br and 81Br in these halides was studied at temperatures of between 77 and 700K, and the results for the Ag halides were compared with those for the Na halides (table 5). By using the Bloembergen-Purcell-Pound model, the activation energies were obtained. On the basis of the latter, the effective radius of the mobile Ag+ ion was deduced to be of the order of 0.1nm.

Y.Michihiro, T.Yamanishi, T.Kanashiro, Y.Kishimoto: Solid State Ionics, 1995, 79, 40-4

Table 5

Activation Energies for Vacancy Hopping and Defect Formation in Halides

(Deduced from nuclear spin-lattice relaxation rates)