1204.6401 (G. S. Bordonskiy et al.)

Study of wet mesostructure silica MCM-41 by low frequency dielectric
spectroscopy    [PDF]

G. S. Bordonskiy, A. A. Gurulev, A. O. Orlov, K. A. Schegrina

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 $23\lyxmathsym{\textdegree}C$ to $-70\lyxmathsym{\textdegree}C$. The phase transition near $-40\lyxmathsym{\textdegree}C$ 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.

View original: http://arxiv.org/abs/1204.6401