Lattice dynamics and antiferroelectricity in ${\mathrm{PbZrO}}_{3}$ tested by x-ray and Brillouin light scattering

Lattice dynamics and antiferroelectricity in ${PbZrO}_{3}$ tested by x-ray and Brillouin light scattering

R. G. Burkovsky, A. K. Tagantsev, K. Vaideeswaran, N. Setter, S. B. Vakhrushev, A. V. Filimonov, A. Shaganov, D. Andronikova, A. I. Rudskoy, A. Q. R. Baron, H. Uchiyama, D. Chernyshov, Z. Ujma, K. Roleder, A. Majchrowski, and Jae-Hyeon Ko

Phys. Rev. B 90, 144301 – Published 8 October 2014

Abstract

We report the results of a comprehensive study of the critical dynamics of the classical perovskite antiferroelectric ${PbZrO}_{3}$ . The combination of inelastic x-ray and diffuse x-ray scattering techniques and Brillouin light scattering was used. It is found that the dispersion of the transverse acoustic (TA) phonons is strongly anisotropic. The dispersion curve of the in-plane polarized TA phonons propagating in [1 1 0] direction demonstrates pronounced softening. Slowing down of the excitations at $R$ point is found, it is manifested in growing of the central peak. This slowing down is too weak to be considered as a primary origin of the corresponding order parameter. Obtained results are treated in terms of TA-transverse optic (TO) flexoelectric mode coupling. It is demonstrated that the structural phase transformation in ${PbZrO}_{3}$ can be considered as the result of the only intrinsic instability associated with the ferroelectric soft mode.

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Received 4 June 2014
Revised 16 September 2014

DOI:https://doi.org/10.1103/PhysRevB.90.144301

Authors & Affiliations

R. G. Burkovsky^*

European Synchrotron Radiation Facility, F-38043 Grenoble Cedex, France and St. Petersburg State Polytechnical University, 29 Politekhnicheskaya, 195251, St.-Petersburg, Russia

A. K. Tagantsev

Ceramics Laboratory, Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne, Switzerland and Ioffe Institute, 26 Politekhnicheskaya, 194021, St.-Petersburg, Russia

K. Vaideeswaran and N. Setter

Ceramics Laboratory, Swiss Federal Institute of Technology (EPFL), CH-1015 Lausanne, Switzerland

S. B. Vakhrushev

Ioffe Institute, 26 Politekhnicheskaya, 194021, St.-Petersburg, Russia and St. Petersburg State Polytechnical University, 29 Politekhnicheskaya, 195251, St.-Petersburg, Russia

A. V. Filimonov, A. Shaganov, D. Andronikova, and A. I. Rudskoy

St. Petersburg State Polytechnical University, 29 Politekhnicheskaya, 195251, St.-Petersburg, Russia

A. Q. R. Baron

Materials Dynamics Laboratory, RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo 679-5148, Japan

H. Uchiyama

Research and Utilization Division, SPring-8/JASRI, 1-1-1 Kouto, Sayo 679-5198, Japan

D. Chernyshov

Swiss-Norwegian Beamlines at ESRF, F-38043 Grenoble Cedex, France

Z. Ujma and K. Roleder

Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland

A. Majchrowski

Institute of Applied Physics, Military University of Technology, ul. Kaliskiego 2, 00-908 Warsaw, Poland

Jae-Hyeon Ko

Department of Physics, Hallym University, 39 Hallymdaehakgil, Chuncheon, Gangwondo 200-702, Korea

^*burkovsk@esrf.fr

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Vol. 90, Iss. 14 — 1 October 2014

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Physical Review B

covering condensed matter and materials physics

Lattice dynamics and antiferroelectricity in ${PbZrO}_{3}$ tested by x-ray and Brillouin light scattering

R. G. Burkovsky, A. K. Tagantsev, K. Vaideeswaran, N. Setter, S. B. Vakhrushev, A. V. Filimonov, A. Shaganov, D. Andronikova, A. I. Rudskoy, A. Q. R. Baron, H. Uchiyama, D. Chernyshov, Z. Ujma, K. Roleder, A. Majchrowski, and Jae-Hyeon Ko

Phys. Rev. B 90, 144301 – Published 8 October 2014

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Physical Review B

covering condensed matter and materials physics

Lattice dynamics and antiferroelectricity in PbZrO3 tested by x-ray and Brillouin light scattering

R. G. Burkovsky, A. K. Tagantsev, K. Vaideeswaran, N. Setter, S. B. Vakhrushev, A. V. Filimonov, A. Shaganov, D. Andronikova, A. I. Rudskoy, A. Q. R. Baron, H. Uchiyama, D. Chernyshov, Z. Ujma, K. Roleder, A. Majchrowski, and Jae-Hyeon Ko

Phys. Rev. B 90, 144301 – Published 8 October 2014

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Lattice dynamics and antiferroelectricity in ${PbZrO}_{3}$ tested by x-ray and Brillouin light scattering