Abstract
The influence of rare earth addition on the microstructure and phase transition of Sr 0·61Ba 0·39Nb 2O 6 ceramics was investigated. Sr 0·61Ba 0·39Nb 2O 6 undoped and doped with 0·3 and 1·0 wt% La 2O 3 and 0·3 wt% Nd 2O 3 were prepared by the conventional ceramic method. Dielectric measurements were performed in order to characterize the phase transition in these ceramics. The addition of RE elements decreased the maximum dielectric constant (ε MAX ) and its correspondent temperature ( T MAX) and increased the dielectric losses in all studied samples. A peak broadening and an increasingly Curie–Weiss behavior was verified for a La, while an inverse dependence occurred for Nd doping.
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