Chinese Physics Letters · 2009 · 14 citations · 21 references
EngineeringMechanical EngineeringFunctional CeramicImproved Thermal StabilityCeramic PowdersElectrical PropertiesLead-free Piezoelectric CeramicsPiezoelectric MaterialPiezoelectric CharacteristicsThermal StabilityMaterials ScienceCrystalline CeramicsPiezoelectric MaterialsPiezoelectricityMicrostructureHigh Temperature MaterialsApplied PhysicsCeramics MaterialsFunctional MaterialsThermal Properties
Lead-free piezoelectric ceramics (1 − x)(Na0.53 K0.404 Li0.066) Nb0.92 Sb0.08 O3+x SrTiO3 are fabricated by conventional solid-state sintering method, and their dielectric and piezoelectric characteristics are investigated. With the addition of SrTiO3, the growth of the grain size is restrained, meanwhile the phase transition temperature of orthorhombic-tetragonal is shifted below room temperature. It is found that the ceramics with x = 0.010 exhibit excellent piezoelectric properties (d33 = 220 pC/N, kp = 41%, kt = 39%) and improved thermal stability around room temperature. The results indicate that these materials are promising lead-free piezoceramics for practical operations.
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Yasuyoshi Saito, Hisaaki Takao, Toshihiko Tani et al. · Nature · 2004 · 5.4K citations
WALTER J. MERZ · Nature · 1972 · 2.5K citations · Full text