Abstract
A new ferroelectric solid solution of (1−x)Ba(Yb1/2Nb1/2)O3−xPbTiO3(0≤x≤1) (PT) has been synthesized in the form of ceramics by solid-state reactions and characterized by means of x-ray diffraction, ferroelectric measurements, and dielectric spectroscopy. All ceramics with different compositions crystallize in the pure perovskite phase. With increasing PT content, the properties of ceramics gradually transfer from dielectrics (x≤0.5) to relaxors (0.50≤x≤0.70), and then to normal ferroelectrics (x>0.70). Based on the x-ray and dielectric measurements, a partial phase diagram of the system is established, which exhibits a morphotropic phase boundary with compositions 0.65<x<0.70.
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