Impurity diffusion of ¹¹⁴In in Cu

Using the tracer‐standard sectioning technique the impurity diffusion of indium in copper has been investigated in the temperature range from 798.1 to 1081.0°C. For the frequency factor and the activation energy, respectively, the following values were determined: D 02 = 1.87 cm 2 · s −1 ; Q 2 = 2.034 eV. The results are compared with predictions of theoretical models of the impurity diffusion in metals.