Study of the mechanism for controlled crystallization of BaF_2 under two kinds of monolayers

摘要

Controlled crystallization of BaF_2 under two different kinds of monolayers octadecylamine [CH_2(CH_2)_17NH_2] and hexadecanol [CH_3(CH_2)_14CH-2OH], has been studied by using x-ray diffraction (XRD) and scanning electron microscope. It was found that the monolayer headgroup, the degree of ionization of the headgroup, etc., had a complicated effect on the selectivity of monolayers for crystal and on the morphology and orientation of crystals grown under the compressed monolayers.