Abstract
From the study of the temperature dependence of quadrupole coupling constants and linewidths a detailed insight into the diffusion of Li in Li3N has been achieved. In accordance with the strong anisotropy of the ionic conductivity the authors found two vacancy-induced diffusion mechanisms for Li ions, one within the Li2N layers and another one perpendicular to them. The second one involves both types of Li position. The jump frequency for the diffusion within the Li2N layers increases strongly with the concentration of hydrogen in the samples.
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