Hypersonic frequency and damping anomalies in relaxor ferroelectric Pb(Zn1/3Nb2/3)O3

M. H. Kuok; S. C. Ng; H. J. Fan; M. Iwata; Y. Ishibashi

doi:10.1063/1.1356733

Hypersonic frequency and damping anomalies in relaxor ferroelectric Pb(Zn_1/3Nb_2/3)O₃

M. H. Kuok^*, S. C. Ng, H. J. Fan, M. Iwata, Y. Ishibashi

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

Brillouin scattering from relaxor ferroelectric Pb(Zn_1/3Nb_2/3)O₃ has been measured between 296 and 780 K. Heating of the virgin Pb(Zn_1/3Nb_2/3)O₃ crystal produced results that are different from those of subsequent heating or cooling processes. An unusually broad softening of the longitudinal acoustic-mode frequency, due to the diffuse ferroelectric-phase transition, is observed. The attendant phonon damping is attributed to order-parameter fluctuations. A huge temperature hysteresis, which eluded observation by other techniques, has been found.

Original language	English
Pages (from-to)	1727-1729
Number of pages	3
Journal	Applied Physics Letters
Volume	78
Issue number	12
DOIs	https://doi.org/10.1063/1.1356733
Publication status	Published - Mar 19 2001
Externally published	Yes

ASJC Scopus Subject Areas

Physics and Astronomy (miscellaneous)

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title = "Hypersonic frequency and damping anomalies in relaxor ferroelectric Pb(Zn1/3Nb2/3)O3",

abstract = "Brillouin scattering from relaxor ferroelectric Pb(Zn1/3Nb2/3)O3 has been measured between 296 and 780 K. Heating of the virgin Pb(Zn1/3Nb2/3)O3 crystal produced results that are different from those of subsequent heating or cooling processes. An unusually broad softening of the longitudinal acoustic-mode frequency, due to the diffuse ferroelectric-phase transition, is observed. The attendant phonon damping is attributed to order-parameter fluctuations. A huge temperature hysteresis, which eluded observation by other techniques, has been found.",

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AU - Kuok, M. H.

AU - Ng, S. C.

AU - Fan, H. J.

AU - Iwata, M.

AU - Ishibashi, Y.

PY - 2001/3/19

Y1 - 2001/3/19

N2 - Brillouin scattering from relaxor ferroelectric Pb(Zn1/3Nb2/3)O3 has been measured between 296 and 780 K. Heating of the virgin Pb(Zn1/3Nb2/3)O3 crystal produced results that are different from those of subsequent heating or cooling processes. An unusually broad softening of the longitudinal acoustic-mode frequency, due to the diffuse ferroelectric-phase transition, is observed. The attendant phonon damping is attributed to order-parameter fluctuations. A huge temperature hysteresis, which eluded observation by other techniques, has been found.

AB - Brillouin scattering from relaxor ferroelectric Pb(Zn1/3Nb2/3)O3 has been measured between 296 and 780 K. Heating of the virgin Pb(Zn1/3Nb2/3)O3 crystal produced results that are different from those of subsequent heating or cooling processes. An unusually broad softening of the longitudinal acoustic-mode frequency, due to the diffuse ferroelectric-phase transition, is observed. The attendant phonon damping is attributed to order-parameter fluctuations. A huge temperature hysteresis, which eluded observation by other techniques, has been found.

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JF - Applied Physics Letters

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ER -

Hypersonic frequency and damping anomalies in relaxor ferroelectric Pb(Zn_1/3Nb_2/3)O₃

Abstract

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