Abstract
Piezo- and pyroelectric hysteresis loops have been studied in unipolar lead zirconate titanate (PZT) films grown on silicon substrates. The PZT film compositions corresponded to the region of a morphotropic phase boundary. It is established that the degree of unipolarity (spontaneous polarization) in such films can reach a level that is close to the magnitude of residual polarization. Cyclic poling of samples in a strong electric field leads to a sharp drop of the residual polarization, which is related to the pinning of domain walls and the action of external tensile mechanical stresses on the film.
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Original Russian Text © D.A. Kiselev, A. L. Kholkin, A.A. Bogomolov, O.N. Sergeeva, E.Yu. Kaptelov, I.P. Pronin, 2008, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2008, Vol. 34, No. 15, pp. 28–35.
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Kiselev, D.A., Kholkin, A.L., Bogomolov, A.A. et al. Piezo- and pyroelectric hysteresis in thin unipolar PZT films. Tech. Phys. Lett. 34, 646–649 (2008). https://doi.org/10.1134/S1063785008080063
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DOI: https://doi.org/10.1134/S1063785008080063