Applied Physics Letters · 2011 · 30 citations · 12 references
Natural SciencesMaterials EngineeringMaterials ScienceElectronic MaterialsMechanical Behavior Of MaterialsSolid State PhysicsCrystalline MaterialsFerroelectric MaterialsPerovskite MaterialsPhase TransitionsSolid-state Phase TransitionsStrain EngineeringFerroelectric CrystalsFerroelectric Single CrystalsMechanical Strain TransductionMorphotropic Phase BoundaryRelaxor FerroelectricsStrain TransductionStrain-induced Phase TransitionTernary Compounds
In this work, we present experimental evidence that under relatively low level drive (<0.1 MV/m) the large strain (∼0.5%) associated with ferroelectric rhombohedral FR-ferroelectric orthorhombic FO phase transition in domain engineered relaxor–ferroelectric single crystals under compressive stress and bias electric field can be captured. We have demonstrated this in mechanically confined ternary Pb(In1/2Nb1/2)O3–Pb(Mg1/3Nb2/3)O3–PbTiO3 single crystals poised at the rhombohedral side of the morphotropic phase boundary. Experimental strain-field results, methods of mechanical confinement and drive, and a low frequency, compact, high source level sound projector design are presented. Transducers that operate on a large strain principle as a design rule will benefit from this development.
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