Study of wet mesostructure silica MCM-41 by low frequency dielectric spectroscopy
Abstract
The dielectric measurements of mesostructured silica MCM-41 with the pore diameter 3.5 nm at wettings close to maximal were carried out. The measurements were made by using the dielectric spectroscopy method at frequency interval from 25Hz up to 1MHz and for cooling from 23C to -70C. The phase transition near -40C was observed. It is supposed that liquid crystal state exists at higher temperatures of point phase transition. For lower temperatures there were two phases, with one of them being ferroelectric.
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