Mode softening, precursor phenomena, and intermediate phases in PbZrO${}_{3}$

Mode softening, precursor phenomena, and intermediate phases in PbZrO $_{3}$

Jae-Hyeon Ko, Michał Górny, Andrzej Majchrowski, Krystian Roleder, and Annette Bussmann-Holder

Phys. Rev. B 87, 184110 – Published 14 May 2013

Abstract

Single crystals of PbZrO $_{3}$ have been studied by Brillouin light scattering, birefringence, and piezoelectric coefficient measurements. The structural phase transition at $T_{c}$ is shown to be related to the softening of a longitudinal acoustic (LA) mode, whereas precursor effects are deduced from a central peak in the light scattering spectrum, finite birefringence, and piezoelectric coefficient above the structural instability. An intermediate phase in the vicinity of $T_{c}$ is apparent where a coexistence of the LA mode with a high frequency mode appears, and in addition the transverse acoustic (TA) mode becomes visible.

Received 24 January 2013

DOI:https://doi.org/10.1103/PhysRevB.87.184110

Authors & Affiliations

Jae-Hyeon Ko¹, Michał Górny², Andrzej Majchrowski³, Krystian Roleder², and Annette Bussmann-Holder⁴

¹Department of Physics, Hallym University, 39 Hallymdaehakgil, Chuncheon, Gangwondo 200-702, Korea
²Institute of Physics, University of Silesia, ulica Uniwersytecka 4, PL-40-007 Katowice, Poland
³Institute of Applied Physics, Military University of Technology, ul. Kaliskiego 2, 00-908 Warsaw, Poland
⁴Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, D-70569 Stuttgart, Germany

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Issue

Vol. 87, Iss. 18 — 1 May 2013

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