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Journal Articles Journal of Physics D: Applied Physics Year : 2018

The anhysteretic polarisation of ferroelectrics


Measurement and calculation of anhysteretic curves is a well-established method in the field of magnetic materials and is applied to ferroelectric materials here. The anhysteretic curve is linked to a stable equilibrium state in the domain structure, and ignores dissipative effects related to mechanisms such as domain wall pinning. In this study, an experimental method for characterising the anhysteretic behaviour of ferroelectrics is presented, which is subsequently used to determine the anhysteretic polarisation response of polycrystalline barium titanate and a doped lead zirconate titanate composition at room temperature. Various external parameters, such as electric field, stress, and temperature, can significantly affect ferroelectric behaviour. Ferroelectric hysteresis curves can assess the importance of such effects but cannot distinguish their contribution on the different intrinsic and extrinsic mechanisms involved in ferroelectric behaviour. In this work, the influence of compressive stress on the anhysteretic polarisation is measured and discussed. The comparison of the polarization loop to the anhysteretic curve under compressive stress elucidates the effects on the stable equilibrium domain configuration and dynamic effects associated to dissipation.


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hal-01727810 , version 1 (09-03-2018)



K Kaeswurm, Valentin Segouin, Laurent Daniel, K Webber. The anhysteretic polarisation of ferroelectrics. Journal of Physics D: Applied Physics, 2018, 51 (7), pp.075305. ⟨10.1088/1361-6463/aaa698⟩. ⟨hal-01727810⟩
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