MICROSCOPIC STUDY OF A RECRYSTALLIZATION PROCESS FROM AQUEOUS-SOLUTION

For the first time the time differential perturbed angular correlation (Hf-181-TDPAC) technique is used to investigate a recrystallization p rocess from solution. The time evolution of the electric field gradien t during the recrystallization of CoHfF6.6H(2)O from aqueous solution was determined and suitable explanations for the behavior of the quadr upole parameters in the whole temporal range are given. Liquid and sol id phase are clearly distinguished. A discussion on the orientation of the recrystallized microcrystals is presented.