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
Related Articles
- EP ID EP298953
- DOI -
- Views 88
- Downloads 0
Heat Сapacity and Debye Temperature of CdTe, CdSe Crystals
Based on the results of ab initio quantum-chemical calculations of the crystal structure of molecular clusters the temperature dependence of the specific heat of CdTe and CdSe crystals at constant volume CV and constant...
Spectroscopic Research of Interaction in the Systems Ge-In2O3-MxOy (M-Sn(IV), La, Sm, Eu)
Using methods of IR transparency spectroscopy in a range of 1200 – 200 cm-1 and diffuse reflectance spectroscopy in a range of 200 – 2500 nm the character of interaction in the systems Ge-In2O3, Ge-In2SnO5, Ge-LnInO3 (Ln...
Correlation of Antiwear and Antifriction Properties of Carbon Fiber with Hardness and Roughness of Metal Adjacent Surfaces
Correlations between friction coefficient and intensity of wear of polytetrafluoroethylene – carbon-plastic, derived by CMA-technology, and nature, hardness, roughness (initial and the one that arose in the friction and...
Influence of Doping and Two-temperature Annealing on CdTe:Br Defective Subsystem
The influence of impurities and annealing conditions on the electrical properties of single cadmium telluride crystals with bromine doping grown by Bridgman method and annealed in cadmium atmosphere at temperatures T = 8...
Structure and Properties of Materials on the Basis of Ag-Pb-Sb-Te with High Thermоelectric Figure of Merit
The review of works devoted to the study of thermoelectric, thermodynamic and mechanical properties of highly efficient thermoelectric materials in the system Ag-Pb (Sn) -Sb-Te. It is shown that based on them can be obta...