TU Darmstadt / ULB / TUbiblio

Modelling of the vertical deflection of ferroelectric bending tongues loaded at their free end

Cardoletti, Juliette and Radetinac, Aldin and Thiem, Daniel and Walker, Julian and Komissinskiy, Philipp and Xu, Bai-Xiang and Schlaak, Helmut and Trolier-McKinstry, Susan and Alff, Lambert (2019):
Modelling of the vertical deflection of ferroelectric bending tongues loaded at their free end.
In: AIP Advances, 9 (2), American Institute of Physics, ISSN 2158-3226,
DOI: 10.1063/1.5082392,
[Online-Edition: https://doi.org/10.1063/1.5082392],
[Article]

Abstract

In this work, a model to describe the vertical deflection of ferroelectric bending tongues with a load at their free end is proposed. The model is based on the ferroelectric switching criterion developed by Hwang et al. [“Ferroelectric/ferroelastic interactions and a polarization switching model,” Acta Metall. Mater. 43, 2073–2084 (1995)] and the Euler-Bernoulli beam theory. It notably takes into account the geometry of the bending tongue, the mechanical and piezoelectric material properties, the applied electrical field, the crystallographic state of the ferroelectric thin film and its built-in strain. Hwang’s model is improved by incorporating strain saturation at high field, as expected for the butterfly loop. This allows accurate estimates of the vertical deflection for ferroelectric bending tongue based applications.

Item Type: Article
Erschienen: 2019
Creators: Cardoletti, Juliette and Radetinac, Aldin and Thiem, Daniel and Walker, Julian and Komissinskiy, Philipp and Xu, Bai-Xiang and Schlaak, Helmut and Trolier-McKinstry, Susan and Alff, Lambert
Title: Modelling of the vertical deflection of ferroelectric bending tongues loaded at their free end
Language: English
Abstract:

In this work, a model to describe the vertical deflection of ferroelectric bending tongues with a load at their free end is proposed. The model is based on the ferroelectric switching criterion developed by Hwang et al. [“Ferroelectric/ferroelastic interactions and a polarization switching model,” Acta Metall. Mater. 43, 2073–2084 (1995)] and the Euler-Bernoulli beam theory. It notably takes into account the geometry of the bending tongue, the mechanical and piezoelectric material properties, the applied electrical field, the crystallographic state of the ferroelectric thin film and its built-in strain. Hwang’s model is improved by incorporating strain saturation at high field, as expected for the butterfly loop. This allows accurate estimates of the vertical deflection for ferroelectric bending tongue based applications.

Journal or Publication Title: AIP Advances
Volume: 9
Number: 2
Publisher: American Institute of Physics
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Advanced Thin Film Technology
Date Deposited: 03 Nov 2019 20:57
DOI: 10.1063/1.5082392
Official URL: https://doi.org/10.1063/1.5082392
URN: urn:nbn:de:tuda-tuprints-92433
Export:
Suche nach Titel in: TUfind oder in Google
Send an inquiry Send an inquiry

Options (only for editors)

View Item View Item