Relaxor-like features in pressure-treated barium titanate powder

Properties of the barium titanate submicron powder pressure-treated under 4 GPa were studied by techniques of differential scanning calorimetry, inelastic light scattering, second harmonic generation, and dielectric measurements. It was found that the pressure-treated powder of this classical ferroelectric mimics a number of the experimental properties which are known for the relaxor ferroelectrics. This means that some interesting relaxor-like features can be reproduced in the simple systems without the compositional disorder.