Title

Effect Of Composition On Rate Dependence Of Ferroelastic/Ferroelectric Switching In Perovskite Ceramics

Keywords

Domain switching; Ferroelastic perovskites; Rate dependence; Rayleigh law; Stress-strain loops

Abstract

The process of ferroelectric/ferroelastic switching is rate dependent as evidenced by the frequency dependence of the coercive field/stress in polarisation/strain-electric field/stress loops. The rate dependence of domain switching has been investigated in different compositions of ferroelectric/ferroelastic perovskites by studying their stress-strain hysteresis loops. Stress-strain loops were generated by applying a static compressive load and then superimposing cyclic compressive loads of different amplitudes and frequencies. The stress-strain loops were fitted using a Rayleigh type relationship, whose parameters characterise the intrinsic and extrinsic contributions to the strain. Using these parameters, the rate dependence of the extrinsic domain wall contribution was investigated. © 2009 Institute of Materials, Minerals and Mining.

Publication Date

11-1-2009

Publication Title

Materials Science and Technology

Volume

25

Issue

11

Number of Pages

1312-1315

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1179/026708309X12474766656218

Socpus ID

70749120652 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/70749120652

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