Mechanism of growth of ZnO single crystals from hydrothermal alkali solutions

The results obtained in experiments on the growth of zinc oxide, ZnO, under hydrothermal conditions are generalized. The polar growth and nonstoichiometry of ZnO crystals are analyzed in terms of crystal chemistry with due regard for the physicochemical conditions of the growth medium. The effect of the Li+ and of di- and trivalent metal (Co2+, Fe2+, Mn2+, Fe3+, Mn3+, Sc3+, In3+,) impurities on the kinetics and some physical characteristics of ZnO crystals are studied, and the chemical reactions occur-ring on the surfaces of the (0001) and (000(1) over bar) faces are considered. (C) 2002 MAIK Nalika/Interperiodica.