Publication

Temperature dependence of piezoelectric properties for relaxor-ferroelectric solid solutions undergoing a rhombohedral to tetragonal phase transition

Nava Setter, Dragan Damjanovic, Gilles Robert
1999
Journal Articles

Abstract

The piezoelectric properties of rhombohedral relaxor-ferroelectric compositions close to morphotropic phase boundary have been studied as a function of temperature. As they exhibit, upon heating, a rhombohedral to tetragonal phase transition the piezoelectric behavior changed with temperature. Large piezoelectric (d(33)) and coupling (k(33)) coefficients of 0.91 Pb(Zn1/3Nb2/3)O-3-0.09PbTiO(3) single crystals drop to usual ceramic values after crossing the transition. Intrinsic and reversible contributions to the piezoelectric response reach a maximum at transition for 0.50PNN-0.16PZ-0.34PT. The influence of poling temperature on extrinsic contributions through possible structural changes was demonstrated.

Official source

https://infoscience.epfl.ch/entities/publication/bc3f88b6-b9f0-4b0e-a3b7-f0d5e249e9de

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Nava Setter, Dragan Damjanovic, Gilles Robert
1999
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/bc3f88b6-b9f0-4b0e-a3b7-f0d5e249e9de

About this result

Related concepts (23)

Piezoelectricity

Piezoelectricity (ˌpiːzoʊ-,_ˌpiːtsoʊ-,_paɪˌiːzoʊ-, piˌeɪzoʊ-,_piˌeɪtsoʊ-) is the electric charge that accumulates in certain solid materials—such as crystals, certain ceramics, and biological matter such as bone, DNA, and various proteins—in response to applied mechanical stress. The word piezoelectricity means electricity resulting from pressure and latent heat. It is derived (an ancient source of electric current). The piezoelectric effect results from the linear electromechanical interaction between the mechanical and electrical states in crystalline materials with no inversion symmetry.

Lead zirconate titanate

Lead zirconate titanate, also called lead zirconium titanate and commonly abbreviated as PZT, is an inorganic compound with the chemical formula It is a ceramic perovskite material that shows a marked piezoelectric effect, meaning that the compound changes shape when an electric field is applied. It is used in a number of practical applications such as ultrasonic transducers and piezoelectric resonators. It is a white to off-white solid. Lead zirconium titanate was first developed around 1952 at the Tokyo Institute of Technology.

Ferroelectricity

Ferroelectricity is a characteristic of certain materials that have a spontaneous electric polarization that can be reversed by the application of an external electric field. All ferroelectrics are also piezoelectric and pyroelectric, with the additional property that their natural electrical polarization is reversible. The term is used in analogy to ferromagnetism, in which a material exhibits a permanent magnetic moment. Ferromagnetism was already known when ferroelectricity was discovered in 1920 in Rochelle salt by Joseph Valasek.

Related publications (11)

Temperature dependence of piezoelectric properties for relaxor-ferroelectric solid solutions undergoing a rhombohedral to tetragonal phase transition

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