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In this work, lead-free piezoelectric ceramics 0.65Bi1.05Fe1-xGaxO3–0.35BaTiO3, where x = 0, 0.01, 0.02, 0.025, and 0.03 abbreviated as BFG–BT have been synthesized by a conventional solid-state reaction followed by air quenching process.… Click to show full abstract
In this work, lead-free piezoelectric ceramics 0.65Bi1.05Fe1-xGaxO3–0.35BaTiO3, where x = 0, 0.01, 0.02, 0.025, and 0.03 abbreviated as BFG–BT have been synthesized by a conventional solid-state reaction followed by air quenching process. The effects of Ga on crystal structure, microstructure and electric properties of the ceramics have been investigated. X-ray diffraction analysis showed that Ga addition into BF-BT ceramics caused no significant change in crystal structure. However, improvements in ferroelectric, dielectric and piezoelectric properties were obtained at the optimum composition of Ga addition in BF-BT ceramics. A static piezoelectric constant of d33 = 145 pC/N with high Curie temperature TC = 452 °C were obtained at 2 mol% Ga modified BF–BT ceramics.
Journal Title: Journal of Electroceramics
Year Published: 2018
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