Publication

Characterization of PZT thin films for micromotors

Nava Setter, Paul Muralt, Thomas Maeder
1995
Journal Articles

Abstract

Piezoelectric membranes consisting of sputter deposited PbZrXTi1-XO3 (PZT) films on silicon diaphragms have been investigated for their resonance and piezoelectrical properties, in view of their application as stator of a micromotor. The behavior of resonance frequencies was studied as a function of membrane thickness and de-bias, in order to derive the total stress in the films and the piezoelectric coupling constant (d(31)approximate to 40 pm/V). The latter was also derived from the quasi-static deflections.

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https://infoscience.epfl.ch/entities/publication/b6a45589-3d52-419f-8da9-03e5af46c81c

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Nava Setter, Paul Muralt, Thomas Maeder
1995
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/b6a45589-3d52-419f-8da9-03e5af46c81c

About this result

Related concepts (26)

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.

Thin film

A thin film is a layer of material ranging from fractions of a nanometer (monolayer) to several micrometers in thickness. The controlled synthesis of materials as thin films (a process referred to as deposition) is a fundamental step in many applications. A familiar example is the household mirror, which typically has a thin metal coating on the back of a sheet of glass to form a reflective interface. The process of silvering was once commonly used to produce mirrors, while more recently the metal layer is deposited using techniques such as sputtering.

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Characterization of PZT thin films for micromotors

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