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Computational modeling of uniaxial antiferroelectric and antiferroelectric-like actuator
  • Binh H. Nguyen,
  • Véronique Rochus
Binh H. Nguyen
Interuniversitair Micro-Elektronica Centrum

Corresponding Author:[email protected]

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Véronique Rochus
Interuniversitair Micro-Elektronica Centrum
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Abstract

Recently, antiferroelectric and antiferroelectric-like materials have regained interest for electronic devices, such as field-effect transistors, memory, and transducers. Particularly, in micro/nano-electromechanical coupling systems, such as actuators, these innovative materials, with their peculiar phase transition between antiferroelectric and ferroelectric phases, show promise in offering large electro-strain, fast response, and low power consumption devices. However, compared to the numerous computational models of ferroelectric actuators, numerical modeling of antiferroelectric and antiferroelectric-like actuators remains relatively unexplored. In this paper, we propose a phenomenological model of a uni-axial antiferroelectric and antiferroelectric-like actuators based on their switching polarization behavior. Specifically, both the double hysteresis loop of antiferroelectric materials and the pinched hysteresis loop of antiferroelectric-like materials can be captured by two hyperbolic tangent functions. This allows us to cast a polarization-dependent strain and piezoelectric tensor into the constitutive laws. The proposed model is then implemented into a finite element framework, in which the voltage-induced deformation can be solved using the Newton-Raphson procedure. Numerical examples of both antiferroelectric and antiferroelectric-like actuators are illustrated and compared with experimental data, showing our proposed model can serve as a useful tool for the design and development of antiferroelectric and antiferroelectric-like actuators.
Submitted to International Journal of Numerical Modelling: Electronic Networks, Devices and Fields
14 Feb 2024Reviewer(s) Assigned
20 May 20241st Revision Received
05 Jun 2024Review(s) Completed, Editorial Evaluation Pending
11 Jul 2024Editorial Decision: Accept