STUDY OF THE GROWTH-MECHANISM OF L-ARGININE CHLORIDE MONOHYDRATE (LACH) CRYSTALS

It has been established that the velocity upsilon of steps on the (001) faces depends nonlinearly on the supersaturation sigma: as sigma increases, d-upsilon/d-sigma decreases. For the steps of different orientation the dependences upsilon(sigma) are different and the hillock shape changes with increasing sigma. It has been proved that upsilon is independent of the interstep distance; the behaviour of upsilon(sigma) is not associated with the bulk or surface diffusion processes. In order to interpret the experiments, the supersaturation dependence of the kinetic coefficient activation energy has been suggested.