Study of crystal perfection in the KCl-KBr and KCl-RbCl systems

The dislocation densities in the crystals of the KCl-KBr and KCl-RbCl systems with varying KCl concentration have been determined from the integrated reflection intensities. The results obtained lead to the conclusion about the formation of disordered solid solutions. It is shown that the dislocation density in the systems is higher than the dislocation density in the starting components and attains the maximum value for the compositions close to equimolar. The change of the dislocation and microstress densities depending on the KCl concentration are well correlated, which indicates the appearance of high stresses during the formation of a solid solution.