Ferroelectric properties of lead zirconate-titanate (PZT) single crystals and lead magnesium-niobate (PMN) ceramics
Gasiak, Tatiana (2021)
School of Engineering Science, Laskennallinen tekniikka
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The samples of Pb[Zr0.989Ti0.011]O3 (PZT 1.1) single crystal and 0.8Pb[Mg1/3Nb2/3]O3 - 0.2PbTiO3 (PMN PT20) ceramics were investigated. PMN PT20 ceramics was measured with the dielectric spectroscopy method. Relaxation peak was detected that refers to PMN PT20 phase transition. Both samples were measured with piezoresponse force microscopy (PFM). Polarization experiments were provided. The PZT crystal showed a different piezoelectric response at different areas of the sample surface, which corresponds to its inhomogeneity.