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

Acoustic properties of antiferroelectric (AFE) PbZr 0.72 Sn 0.28 O 3 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 succ...

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Published inFerroelectrics Vol. 479; no. 1; pp. 1 - 7
Main Authors Ko, Jae-Hyeon, Jeong, Min-Seok, Lee, Byoung Wan, Kim, Tae Hyun, Jankowska-Sumara, Irena, Majchrowski, Andrzej, Bussmann-Holder, Annette, Ko, Young Ho, Kim, Kwang Joo, Soszyński, Andrzej, Roleder, Krystian
Format Journal Article
LanguageEnglish
Published Taylor & Francis 26.04.2015
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Summary:Acoustic properties of antiferroelectric (AFE) PbZr 0.72 Sn 0.28 O 3 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 PbZr 0.72 Sn 0.28 O 3 were much higher than those of pure PbZrO 3 . 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 PbZr 1-x Sn x O 3 .
ISSN:0015-0193
1563-5112
DOI:10.1080/00150193.2015.1008372