Abstract
Due to the need to limit the use of Pb in electrical products, dielectric materials based on lead-free perovskite compounds with relaxor behavior are being actively developed. In this study, we carried out an investigation on the perovskite material Ba(SnxTi1-x)O3, whose B-site ions comprise elements from different periodic table groups but have the same valence state of 4+. We fabr icated and evaluated ceramics, single layer solid solution (SS) thin films, and order-controlled superlattice (SL) thin films. The shape of the dielectric anomaly in these materials was demonstrated and the value of parameter γ, calculated from the Curie-Weiss law, was found to be 1.71 for ceramics, 1.86 for SS films and 1.90 for 33% ordered SL films. In addition, the influence of the order-disorder transition on diffuse phase transition (DPT) was clarified.
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