  Isothermal crystallization of the mono-hydroxyl alcohol n-butanol was studied
with dielectric spectroscopy in real time. The crystallization was carried out
using two different sample cells at 15 temperatures between 120 K and 134 K.
For all temperatures, a shift in relaxation times to shorter times was observed
during the crystallization process, which is characterized by a drop in
relaxation strength. The two different sample environments induced quite
different crystallization behaviors, consistent and reproducible over all
studied temperatures. An explanation for the difference was proposed on the
background of an Avrami and a Maxwell-Wagner analysis. Both types analysis
suggest that the morphology of the crystal growth changes at a point during the
crystallization. The differences between the cells can be explained by this
transition taking place at different times for the two cells.
