Kanert, O.O.KanertGünther, B.B.Günther2022-03-082022-03-081985https://publica.fraunhofer.de/handle/publica/313975Self diffusion in monocrystalline tellurium and selenium, respectively, has been investigated with site-selective NMR techniques that allow a direct measurement of atomic jump frequencies with a high degree of accuracy. The diffusion coefficients DNMR thus obtained in tellurium are in excellent agreement with recently performed 127Te radio-tracer measurements parallel to the hexagonal c-axis supporting the 1V-1N, 2N-diffusion model. In contrast, for selenium DNMR is about a factor of 20 smaller than earlier tracer data.endiffusionKernspinrelaxationKernspinresonanzNMRSelbstdiffusionSelenTellur620660671conference paper