Ferroelectric behaviour in polycrystalline BaTiO3 films with thicknesses down to 100 ± 20 Å has been found. PS for films 100 to 5000 A is 2 to 10 μC/cm2. Vacuum deposits of solid solutions (Ba,Sr)TiO3 in the range 1000 to 3000 Å have been grown with different Curie points. Studies have been carried out on films of some new complex oxide structure ferroelectrics.
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Tomashpolsky et al. (1974) studied this question.
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