Dislocation Motion Investigated by Means of Nuclear Spin Relaxation Measurements
The technique of pulsed nuclear magnetic resonance is used to study the movement of dislocations in deforming alkalihalide single crystals of different crystallographic orientation. The spin-lattice relaxation time T10 depends strongly on the mean free path L covered between dislocation jumps. Since the workhardening behaviour of solids is related to the distance L, it is possible by this experiment to obtain detailed information about the microscopic plasticity of crystals.
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