ON THE GROWTH HILLOCK VICINALITY AND NORMAL GROWTH-RATES OF THE (101)FACE OF KDP CRYSTALS

The experimental data reported by De Yoreo et al. [Phys. Rev. Lett. 78 (1997) 4462; J. Crystal Growth 182 (1998) 442] on the dependence of t he inclination p of growth hillocks on the (1 0 1) face of KDP on supe rsaturation sigma, and those reported by Zaitseva et al. [Kristallogra fiya 36 (1991) 198] on the dependence of supersaturation sigma on temp erature T to maintain a particular face growth rate R are analysed fro m the standpoint of a power-law approach recently proposed by Sangwal [J. Crystal Growth 192 (1998) 200]. It is demonstrated that the power- law approach can satisfactorily be used to describe the experimental p (sigma) data and to rescale the face growth rate data as normalised gr owth rate R/T sigma(n) (with n = 1.5) falling onto a single Arrhenius- type plot, with an activation energy of 39.2 kJ/mol for growth. (C) 19 98 Elsevier Science B.V. All rights reserved.