Electrical Properties of the Solid Solution System Cd₃As₂+Zn₃As₂

ABSTRACT

Hall effect and electrical resistivities of solid solutions of the semiconducting compounds Cd₃As₂ and Zn₃As₂ have been studied, both at room temperature and at liquid nitrogen temperature. The system is interesting because Cd₃AS₂ is n-type while Zn₃As₂ is p-type, giving rise to the possibility of ‘compensation’ in the solid solution. The range of solid solution extends from 0 percent Cd₃As₂ to 100 per cent Cd₃As₂.

The carrier density and mobilities have been evaluated both at 300° and 78°K.

The samples were prepared by direct fusion of the elements. Some problems encountered in the preparation of the materials are discussed.