Growth of K2Cо(SO4)2 · 6H2O Crystals Using Low-Frequency Axial Vibration Control Technique

Resumo

K₂Co(SO₄)₂ · 6H₂O crystals have been grown by lowering temperature with the formation of controlled mass transfer by means of low-frequency harmonic oscillations of a chemically inert body immersed in a solution, i.e., by a technique of low-frequency axial vibration control technique. It is shown that application of this technique allows one to increase the volume growth rate by a factor of ~2 and improve the structural quality of crystals, i.e., to decrease the dislocation density on different faces by a factor of 10–100. An analysis of the transmission spectra in the range of 200–400 nm showed that the grown crystals are more transparent (by 26%) than the crystals grown in the absence of vibrations.