Electromigration in non-dilute binary alloys

This paper comments the recently published works on the electromigration in non-dilute binary alloys and gives a general analysis for calculating the effective valences $\text{Z}{}_{\mathrm{i}}{}^1$ of both components from experimental measurements. The proposed expressions for $\text{Z}{}_{\mathrm{i}}{}^1$ can be reduced to simple forms when Manning's expressions [5] for the phenomenological coefficients are used. These results allow us to calculate the effective valences of Silver and Gold in non-dilute Ag-Au alloys from Hofman and Guy's experimental data.