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Enhanced Polarization Fluctuations in PbZr0.72Sn0.28O3 Compared to PbZrO3 Single Crystals Studied by Brillouin Light Scattering

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Bussmann-Holder,  A.
Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;
Department Electronic Structure Theory (Ali Alavi), Max Planck Institute for Solid State Research, Max Planck Society;
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;
Department Nanochemistry (Bettina V. Lotsch), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Ko, J., Jeong, M., Lee, B., Kim, T., Jankowska-Sumara, I., Majchrowski, A., et al. (2015). Enhanced Polarization Fluctuations in PbZr0.72Sn0.28O3 Compared to PbZrO3 Single Crystals Studied by Brillouin Light Scattering. Ferroelectrics, 479, 1-7.


Cite as: https://hdl.handle.net/21.11116/0000-000E-CD5C-5
Abstract
Abstracts Acoustic properties of antiferroelectric (AFE) PbZr0.72Sn0.28O3 single crystals were investigated in a wide temperature range by Brillouin light scattering spectroscopy. The Brillouin frequency shift of the longitudinal acoustic (LA) mode exhibited three abrupt changes corresponding to the successive phase transitions between the paraelectric, intermediate, antiferroelectric (AFE2) and antiferroelectric (AFE1) phases upon cooling. The change in the LA mode frequency and the damping maximum of PbZr0.72Sn0.28O3 were much higher than those of pure PbZrO3. This was attributed to enhanced polarization fluctuations caused by increased ferroelectric distortions due to Sn substitution and the proximity to the tricritical point on the phase diagram of PbZr1-xSnxO3.