Abstract
A new method has been applied to form Cd u Zn 1− u Se solid solutions: ion exchange in the melts of salts. The regularities and specific features of ion exchange processes Cd 2+ ⇄ Zn 2+ in ZnSe powder and single crystal plates have been studied. Cd u Zn 1− u Se solid solution obeys the model of regular solution. Temperature dependences of equilibrium constant and interaction energy of strained and unstrained Cd u Zn 1− u Se solid solutions have been defined. We proposed the model taking into account the role of lattice-misfit-induced stresses and dislocations in the ion exchange equilibrium. The depth profiles of elements in the ion exchanged Cd: ZnSe single crystal structures were analysed and temperature dependences of self-diffusion coefficients of Zn 2+ and Cd 2+ and Cd 2+ ions were determined.
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