Correlations between Dislocation Character and Lithium Precipitation Kinetics in Germanium

Abstract

The lithium precipitation kinetics have been examined in germanium containing dislocations with different character and density. The experimental data have been interpreted on the basis of existing growth theories by considering solute transfer coefficients from the matrix to the precipitates on the dislocations different for each dislocation type. The behavior of the 60° dislocations can be explained by assuming that they are surrounded by mobile vacancy clouds and by space-charge cylinders where the lithium concentration remains negligible.