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Investigation of impurity diffusion in dilute alloys by nuclear magnetic resonance.

Untersuchung der Fremddiffusion in verdünnten Legierungen mit der kernmagnetischen Resonanz
: Kanert, O.; Guenther, B.

Solid State Communications 38 (1981), No.7, pp.643-646 : Abb.,Lit.
ISSN: 0038-1098
Journal Article
Fraunhofer IFAM ()
diffusion; Fremddiffusion; Kernspinrelaxation; Legierung; NMR; verdünnte Legierung

The diffusion of Al in a Cu- 3.8 at % Al alloy has been investigated by observing the rotating-frame nuclear magnetic relaxation time T1rho of 27Al as a function of temperature. It is shown that relaxation measurements of the solute atoms in a dilute alloy provide the correlation time of the diffusive motion of these atoms, if quadrupolar interactions form the main contribution to the relaxation time. From the correlation times the Al-diffusion coefficient in the alloy has been determined. (orig.)