Temperature Dependences Conductivity of Ceramics with Composition Li2O - Fe2O3 - Al2O3 from the Content of Aluminium
Journal Title: Фізика і хімія твердого тіла - Year 2014, Vol 15, Issue 1
Abstract
The method of impedance spectroscopy was used for research temperature dependences of electrophysical properties ceramic with composition Li2O-Al2O3-Fe2O3. It is shown that in general with increasing temperature conductivity increases, however, the Arrhenius curves for systems designs, depending on the method of synthesis, show the dominance of different mechanisms of conduction in some areas temperatures. In addition, with increasing content of aluminum in engines activation energy at which the change in the mechanism of conductivity shifts to higher temperatures. For samples slowly cooled with the oven was detected existence in the temperature range (350-400 K) ferroelectric properties, which are confirmed by temperature dependencies of the real part of the dielectric constant.
Authors and Affiliations
B. J. Deputat
Keywords
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