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A Mesoscopic Electromechanical Theory of Ferroelectric Films and Ceramics

Li, Jiangyu and Bhattacharya, Kaushik (2002) A Mesoscopic Electromechanical Theory of Ferroelectric Films and Ceramics. In: Fundamental physics of ferroelectrics 2002. AIP Conference Proceedings. No.626. American Institute of Physics , Melville, NY, pp. 224-231. ISBN 0-7354-0079-2.

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We present a multi-scale modelling framework to predict the effective electromechanical behavior of ferroelectric ceramics and thin films. This paper specifically focuses on the mesoscopic scale and models the effects of domains and domain switching taking into account intergranular constraints. Starting from the properties of the single crystal and the pre-poling granular texture, the theory predicts the domain patterns, the post-poling texture, the saturation polarization, saturation strain and the electromechanical moduli. We demonstrate remarkable agreement with experimental data. The theory also explains the superior electromechanical property of PZT at the morphotropic phase boundary. The paper concludes with the application of the theory to predict the optimal texture for enhanced electromechanical coupling factors and high-strain actuation in selected materials.

Item Type:Book Section
Related URLs:
URLURL TypeDescription DOIArticle
Li, Jiangyu0000-0003-0533-1397
Bhattacharya, Kaushik0000-0003-2908-5469
Additional Information:© 2002 American Institute of Physics. Issue Date: 17 August 2002. The authors gratefully acknowledge the financial support of the Army Research Office through DAAD 19-99-1-0319 and DAAD 19-01-1-0517.
Funding AgencyGrant Number
Army Research Office (ARO)DAAD 19-99-1-0319
Army Research Office (ARO)DAAD 19-01-1-0517
Subject Keywords:electromechanical effects, ferroelectricity, ferroelectric materials, ferroelectric thin films, ceramics, electric domains, dielectric polarisation, deformation, texture
Series Name:AIP Conference Proceedings
Issue or Number:626
Classification Code:PACS: 77.65.Bn; 77.80.-e; 77.55.+f
Record Number:CaltechAUTHORS:20111026-092923527
Persistent URL:
Official Citation:A Mesoscopic Electromechanical Theory of Ferroelectric Films and Ceramics Jiangyu Li and Kaushik Bhattacharya, AIP Conf. Proc. 626, 224 (2002), DOI:10.1063/1.1499571
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:27434
Deposited By: Tony Diaz
Deposited On:26 Oct 2011 17:31
Last Modified:18 Nov 2020 23:09

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