Kinetics of the growth of filamentary KH$_{2}$PO$_{4}$ crystals on a seed crystal

At oversaturations exceeding the inert range end for face $\{101\}$ due to the presence of admixture Al(NO$_{3}$)$_{3}$ $\cdot$ 9H$_{2}$O, a new phase is observed during the growth of this face in the form of filamentary crystals. Some experimental dependences of the growth rate of filamentary potassium dihydrophosphate (KH$_{2}$PO$_{4}$ ) crystals on the oversaturation have been obtained at different admixture concentrations. The growth of filamentary crystals occurs by the mechanism of two-dimensional nucleation. Their formation is governed by the effect of [AlHPO$_{4}$]$^{+}$ complexes in the form of Cabrera and Vermilyea stoppers.