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A functionally gradient piezoelectric actuator prepared by powder metallurgical process in PNN-PZ-PT system

Materials ScienceMaterials EngineeringEngineeringPowder Metallurgical ProcessPiezoelectric NanogeneratorsMechanical EngineeringGradient Piezoelectric ActuatorPiezoelectric MaterialsActuationPiezoelectric MaterialPnn-pz-pt SystemPiezoelectricityMicromachined Ultrasonic Transducer