Abstract

Recently, lead-free piezoelectric ceramics have widely attracted interest among the research community, as they are considered to be potential substitutes for lead-based ceramics which causes environmental pollution due to the presence of hazardous lead oxide in them. In the present study we have synthesized La doped Ba1−x/2Lax/3(ZryTi1−y)O3 (x=0–0.06 in steps of 0.02; y=0, 0.05) ceramics by the conventional solid-state reaction method. Results reveal that electric field induced strain increases from ∼0.08% to ∼0.18% (at 40kV/cm applied field) for x=0.02 and y=0.05 of lanthanum and zirconium substitution respectively compared to undoped BaTiO3. It was also observed that, sample with 2mol% lanthanum could sustain higher electric field upto 120kV/cm during strain measurement (without electrical breakdown) and results showed highest strain value of ∼0.3% in this system.

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