The influence of A-cation disorder on the Curie temperature of ferroelectric ATiO3 perovskites
Abstract
The ferroelectric Curie temperature TC in ATiO3 perovskites is shown to increase linearly with the size variance of the A-site cation mixture [A = (Ba, Sr, Ca)] and this effect accounts for the unusual TC variation in the Ba1–xCaxTiO3 system.