DIELECTRIC PROPERTIES OF Mg:Al LAYERED DOUBLE HYDROXIDES

Abstract

This work describes the synthesis and characterization of Mg2Al-NO3 layered double
hydroxides nanomaterial prepared using a coprecipitation method. The electrical behavior of
this material was evaluated using dielectric spectroscopy. The results from X-ray diffraction
analysis showed the formation of lamellar structure, while the atomic absorption and infrared
spectroscopy confirms the presence of all species inthe structure of the synthesized material.
TEM shows clusters of plate-like particles and the dielectric spectroscopy results at room
temperature show an orientational polarization behavior that suggests the rotation of water
molecules at high frequency. TEM results also demonstrate the rotation of nitrate anions in
the interlayer spacing at low frequency, which may be responsible for producing anionic
conductivity.