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Piezoelectric properties of the Pb(Sc<sub>1/2</sub>Nb<sub>1/2</sub>) O<sub>3</sub>-Pb(Mg<sub>1/3</sub>Nb<sub>2/3</sub>) O<sub>3</sub>-PbTiO<sub>3</sub> ternary ceramic materials near the morphotropic phase boundary
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Citations
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References
1996
Year
Materials ScienceMorphotropic Phase BoundaryMpb CompositionsEngineeringFerroelectric ApplicationApplied PhysicsCondensed Matter PhysicsCeramics MaterialsFerroelectric MaterialsMaximum Piezoelectric ConstantTernary Ceramic MaterialsPiezoelectric MaterialsPiezoelectric PropertiesPiezoelectric MaterialPiezoelectricityElectrical PropertiesMicrostructure
Abstract The physical and electrical properties of xPb(Sc1/2Nb1/2)O3-yPb(Mg1/3Nb2/3)O3-zPbTiO3(PSMNT 100x/100y/100z) ternary ceramic materials near the morphotropic phase boundary (MPB) were investigated. The MPB follows on almost linear region between the PSMNT 58/00/42 and PSMNT 00/68/32 MPB compositions of the binary systems. The maximum piezoelectric constant, d 33 = 680 pC/N, were found at PSMNT 29/33/38, where εT 33/ε0 = 3,800, and electromechanical coupling factors, (k p = 70%, k31 = 43%, and k 33 = 76%) and T c = 207°C were obtained. The maximum electromechanical coupling factors, (k p = 72%, k 31 = 45%, and k 33 = 77%) were found at PSMNT 29/34/37, where εT 33/ε0 = 3,000, d 33 = 640 pC/N, and T c = 205°C were obtained. These values are better than those of PZT. Key Words: keywords: Ceramicspiezoelectric materiallead scandium niobatelead magnesium niobatelead titanatemorphotropic phase boundary
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