Effect of external forces on the dielectric and pyroelectric properties of strontium-barium niobate crystals

It is shown that high-temperature annealing of strontium-barium niobate crystals increases the mobility of domain boundaries in these crystals. This effect manifests itself in a shift of the peak of the effective permittivity of annealed samples to weaker fields. It is ascertained that the polarization of strontium-barium niobate crystals caused by annealing results in their more homogeneous single-domain state. The effect of Ce and Cr impurities on the polarization state of the surface layers in strontium-barium niobate crystals is considered.