Ferroelectric and pyroelectric properties of Ce3+ modified tetragonal tungsten bronze structured lead barium niobate-55 ceramics

In this work, Lead Barium Niobate-55 tetragonal tungsten bronze structured ceramics modified with Ce³⁺ with the stoichiometric formula Pb_0.55?(3y/2)Ce_yBa_0.45Nb₂O₆, where y=0–10 mol% Ce³⁺, were fabricated through the solid state reaction method and investigated for ferroelectric and pyroelectric properties. Pb_0.55?(3y/2)Ce_yBa_0.45Nb₂O₆ (PBN55) exhibited tetragonal (4mm) tungsten bronze structure. The ferroelectric properties (spontaneous polarization, P_s, remanent polarization, P_r and coercive field, E_c), as a function of Ce³⁺ concentration, have been reported. The influence of Ce³⁺ on pyroelectric properties of the PBN55 system has been evaluated. The pyroelectric properties were characterized and discussed as a function of Ce³⁺. The 6 mol% Ce³⁺ modified tetragonal PBN55 composition exhibited optimum pyroelectric properties in the series which could be suitable for possible pyroelectric applications.