Phase transition from ferroelectric to glass-like microstructure in thin films

The domain patterns of (Ba,Sr)TiO3 thin epitaxial films were studied by rep lica technique with respect to the degree of crystal structure perfection. With increasing the structure defects density numerically estimated by micr ostrain values, the transition to a relaxor-like microstructure occurred, i t seems that the diffusivity of ferroelectric phase transition and other sp ecific features characteristic of thin films of classic ferroelectrics, cou ld be attributed to a co-existence of ferroelectric and relaxer phases in f ilm volume.