Metastable and field-induced ferroelectric response in antiferroelectric lead zirconate thin film studied by the hyperbolic law and third harmonic response

Author:

Nadaud Kevin1ORCID,Borderon Caroline2ORCID,Renoud Raphaël2ORCID,Bah Micka1ORCID,Ginestar Stephane2ORCID,Gundel Hartmut W.2ORCID

Affiliation:

1. GREMAN UMR 7347, Université de Tours, CNRS, INSA-CVL 1 , 16 rue Pierre et Marie Curie, 37071 Tours, France

2. Nantes Université, CNRS, IETR UMR 6164 2 , 44000 Nantes, France

Abstract

In this paper, the field-induced residual ferroelectricity in antiferroelectric lead zirconate thin films has been studied by impedance measurements together with a hyperbolic law analysis, which permits us to extract the different contributions to the material’s complex permittivity. By measuring the Rayleigh coefficient αr, it appears that the residual ferroelectricity is considerably enhanced when the sample has been previously exposed to an electric field close to the antiferroelectric to ferroelectric transition field. This indicates that a part of the material remains ferroelectric after the antiferroelectric–ferroelectric backward transition, which constitutes an additional contribution to polarization. Consequently, a higher domain wall density and mobility can be observed. Measurements after exposition to thermal treatment show that this ferroelectric response is metastable.

Publisher

AIP Publishing

Subject

General Physics and Astronomy

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