Effect of composition on rate dependence of ferroelastic/ferroelectric switching in perovskite ceramics

    Authors

    G. Viola; D. Verbylo; N. Orlovskaya;M. J. Reece

    Comments

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    Abbreviated Journal Title

    Mater. Sci. Technol.

    Keywords

    Ferroelastic perovskites; Rayleigh law; Domain switching; Stress-strain; loops; Rate dependence; ZIRCONATE-TITANATE CERAMICS; PIEZOELECTRIC RESPONSE; FERROELECTRIC; CERAMICS; FREQUENCY-DEPENDENCE; DOMAIN-WALLS; THIN-FILMS; Materials Science, Multidisciplinary; Metallurgy & Metallurgical; Engineering

    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.

    Journal Title

    Materials Science and Technology

    Volume

    25

    Issue/Number

    11

    Publication Date

    1-1-2009

    Document Type

    Article

    Language

    English

    First Page

    1312

    Last Page

    1315

    WOS Identifier

    WOS:000272049300004

    ISSN

    0267-0836

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