Nature of Ag+ self-diffusion in AgF

Measurements of the nuclear magnetic resonance (NMR) dipolar relaxation times T w and T i (51°) have been made on the 1 9 F resonance in AgF powder over the temperature range 60-300 K. Also the technique of Stokes and Ailion for detecting the diffusion of weakly magnetic spins has been verified for powder samples by measuring T ,(9f) v s 'n KF: 0.1 at. % CaF2 powder. A comparison of the NMR results with conductivity measurements of Raaen, Svare, and Fjeldly allows one to rule out diffusion mechanisms in AgF which give rise to strong-collision NMR relaxation, like Ag + vacancy or Ag + interstitialcy diffusion in AgF, thereby suggesting the dominance of a weak-collision mechanism like Ag+ interstitial or possibly grainboundary diffusion.