Now showing items 1-7 of 7
Low frequency admittance measurements of polycrystalline sodium niobate
Complex admittance measurements for the polycrystalline sample of sodium niobate with nonstoichiometric composition has been carried out at very low frequencies with the help of direct phase-amplitude method. Results ...
Temperature dependence of dielectric properties of nonstoichiometric NaNbO
Systematic studies of the dependence of dielectric and semiconducting properties on the deviation from stoichiometry have been undertaken. A complex picture of the dependence of studied properties on the chemical ...
Antiferroelectric-paraelectric phase transformation in nonstoichiometrc NaNbO
Admittance of polycrystalline sodium niobate synthetized with nonstoichiometric proportion of the constituent oxides has been investigated at elevated temperatures. Basic values characterizing the AFE-PE phase transformation ...
Very low frequency study on transport and relaxation phenomena in LiNbO single crystal
The immitance spectroscopy method in very low frequency range (0.001Hz - 0.8Hz) has been applied to the cleaved single crystal of LiNbO. The results of measurements has been treated using complex plane analysis techniques. ...
Investigation of dielectric properties of Li[x]Na[1−x]NbO ceramics for x = 1 and x = 4
The a.c. electrical response of Li[x]Na[1−x]NbO (LNN) solid solution in low frequency range (100 Hz–20 kHz) has been analysed as a function of temperature (300 K–750 K). A complex picture of the dependence of the ...
Przejście fazowe antyferroelektryk - paraelektryk w niestechiometrycznym NaNbO
The theory of AFE-PE phase transformation as formulated by Kittel is reviewed. The experimental values obtained from dielectric measurements are related, to the parameters of Kittel's thermodynamic function. Some of the ...