Abstract
The solubility of Cr in 
was investigated using well‐defined Cr sources selected from specific regions of the Cr‐Ga‐As system and SIMS analysis. Using these sources, maximum solubilities and solid‐liquid distribution coefficients were obtained. These results and the ternary information were used as a point of reference for correlating previous literature values of Cr solubility. The study of the dependence of Cr solubility upon donor concentration and concurrent capacitance voltage measurements were used to establish the electrical activity of Cr in 
.