Electrical admittance of piezoelectric parallelepipeds: application to tensorial characterization of piezoceramics

Oumar Diallo (1) , Emmanuel Le Clezio (2, 3) , Thomas Delaunay (2) , M. Bavencoffe (1) , Guy Feuillard (1)

1 GREMAN - UMR 7347 - GREMAN (matériaux, microélectronique, acoustique et nanotechnologies)
2 IES - Institut d’Electronique et des Systèmes
3 M2A - Matériaux, MicroCapteurs et Acoustique

This work deals with the characterization of functional properties, including determination of mechanical and electrical losses, of piezoelectric materials using only one sample and one measurement. First, the natural resonant frequencies of a piezoelectric parallelepiped are calculated and the electrical admittance is determined from calculations of the charge quantity on both electrodes of the parallelepiped. A first validation of the model is performed using a comparison with Mason's model. Results are reported for a PMN-34.5PT ceramic cube and a good agreement is found between experimental admittance measurements and their modeling. The functional properties of the PMN-34.5PT are then extracted.

Mots clés: Electrical admittance; Electrical properties; Piezoelectricity; Materials properties; Electromechanical resonance; Vibration resonance; Ceramics; Tensor methods; Elasticity; Electrodes

Domaines: Acoustique [physics.class-ph]; Electronique

Oumar Diallo, Emmanuel Le Clezio, Thomas Delaunay, M. Bavencoffe, Guy Feuillard. Electrical admittance of piezoelectric parallelepipeds: application to tensorial characterization of piezoceramics. AIP Advances, 2014, 4 (1), ⟨10.1063/1.4863090⟩. ⟨hal-01627806⟩