Dispersion of the polarization processes in Ca0.32Ba0.68Nb2O6 crystals

Аннотация

The switching processes in calcium barium niobate crystals CaxBa_1–xNb₂O₆ with x = 0.32 have been investigated. The dielectric hysteresis loops observed in the samples exposed to alternating fields of different frequencies and constant amplitude have been analyzed. It is shown that the loop formation is caused by the sample heating. The sample temperature increases due to the dielectric loss energy release only up to a certain frequency, above which complete switching becomes impossible.