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

Cardoletti, Juliette ; Radetinac, Aldin ; Thiem, Daniel ; Walker, Julian ; Komissinskiy, Philipp ; Xu, Bai-Xiang ; Schlaak, Helmut ; Trolier-McKinstry, Susan ; 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,
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Item Type: Article
Origin: Secondary publication via sponsored Golden Open Access
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 of the journal: 9
Issue Number: 2
Place of Publication: Darmstadt
Publisher: American Institute of Physics
Classification DDC: 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Advanced Thin Film Technology
Date Deposited: 31 Oct 2019 13:21
Last Modified: 13 Dec 2022 11:29
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-92433
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/9243
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