0.87Ca 0.10La 0.03Ti 1-xSn xO 3 lead-free ceramics]]>

摘要

AbstractBa0.87Ca0.10La0.03Ti1-xSnxO3(BCLTS) piezoelectric lead-free ceramics were fabricated by conventional solid-state sintering process at 1480?°C. The effects of Sn4+substitution on microstructure and electrical properties of the ceramics were researched. All samples show a pure perovskite structure with no secondary phase, and the coexistence of orthorhombic phase and tetragonal phase in the composition range of x?=?0.06–0.10 is identified in the XRD pattern. Average grain size decreases with the increase of Sn content in the BCLTS samples. The BCLTS ceramics exhibit excellent piezoelectric properties and ferroelectric properties with d33?=?501pC/N and kp?=?45.6% at x?=?0.10, and Pr?=?9.87?μC/cm2at x?=?0.06. The analysis on the temperature dependence of dielectric permittivity approved the diffuse relaxor ferroelectric feature for all the BCLTS samples.Highlights?The orthorhombic and tetragonal phase coexist in the BCLST ceramics (x?=?0.06 to 0.10).?Excellent electrical properties were obtained at MPB range of x?=?0.06–0.10.?All the samples showed diffuse relaxor ferroelectric feature.]]>