Brillouin and dielectric studies of the phase transition in the relaxor ferroelectric Pb(Ni1/3Nb2/3)O3

H. J. Fan; M. H. Kuok; S. C. Ng; N. Yasuda; H. Ohwa; M. Iwata; H. Orihara; Y. Ishibashi

doi:10.1063/1.1433183

Brillouin and dielectric studies of the phase transition in the relaxor ferroelectric Pb(Ni_1/3Nb_2/3)O₃

H. J. Fan^*, M. H. Kuok, S. C. Ng, N. Yasuda, H. Ohwa, M. Iwata, H. Orihara, Y. Ishibashi

^*Corresponding author for this work

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

25 Citations (Scopus)

Abstract

Brillouin scattering has been performed on the relaxor ferroelectric Pb(Ni_1/3Nb_2/3)O₃ (PNN) from 80 to 450 K across its Curie temperature. A diffuse phase transition from the paraelectric to ferroelectric phase, associated with a broad phonon frequency dip and a damping maximum, is observed around 200 K. A relaxation mode in the form of a broad Rayleigh wing, whose frequency is strongly temperature dependent above 190 K, is observed and analyzed based on a modified superparaelectric model. Dielectric studies of PNN have also been carried out at several measurement frequencies. The relation between the measurement frequency and the dielectric maximum temperature was analyzed on a modified Vogel-Fulcher model.

Original language	English
Pages (from-to)	2262-2266
Number of pages	5
Journal	Journal of Applied Physics
Volume	91
Issue number	3
DOIs	https://doi.org/10.1063/1.1433183
Publication status	Published - Feb 1 2002
Externally published	Yes

ASJC Scopus Subject Areas

General Physics and Astronomy

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title = "Brillouin and dielectric studies of the phase transition in the relaxor ferroelectric Pb(Ni1/3Nb2/3)O3",

abstract = "Brillouin scattering has been performed on the relaxor ferroelectric Pb(Ni1/3Nb2/3)O3 (PNN) from 80 to 450 K across its Curie temperature. A diffuse phase transition from the paraelectric to ferroelectric phase, associated with a broad phonon frequency dip and a damping maximum, is observed around 200 K. A relaxation mode in the form of a broad Rayleigh wing, whose frequency is strongly temperature dependent above 190 K, is observed and analyzed based on a modified superparaelectric model. Dielectric studies of PNN have also been carried out at several measurement frequencies. The relation between the measurement frequency and the dielectric maximum temperature was analyzed on a modified Vogel-Fulcher model.",

author = "Fan, {H. J.} and Kuok, {M. H.} and Ng, {S. C.} and N. Yasuda and H. Ohwa and M. Iwata and H. Orihara and Y. Ishibashi",

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T1 - Brillouin and dielectric studies of the phase transition in the relaxor ferroelectric Pb(Ni1/3Nb2/3)O3

AU - Fan, H. J.

AU - Kuok, M. H.

AU - Ng, S. C.

AU - Yasuda, N.

AU - Ohwa, H.

AU - Iwata, M.

AU - Orihara, H.

AU - Ishibashi, Y.

PY - 2002/2/1

Y1 - 2002/2/1

N2 - Brillouin scattering has been performed on the relaxor ferroelectric Pb(Ni1/3Nb2/3)O3 (PNN) from 80 to 450 K across its Curie temperature. A diffuse phase transition from the paraelectric to ferroelectric phase, associated with a broad phonon frequency dip and a damping maximum, is observed around 200 K. A relaxation mode in the form of a broad Rayleigh wing, whose frequency is strongly temperature dependent above 190 K, is observed and analyzed based on a modified superparaelectric model. Dielectric studies of PNN have also been carried out at several measurement frequencies. The relation between the measurement frequency and the dielectric maximum temperature was analyzed on a modified Vogel-Fulcher model.

AB - Brillouin scattering has been performed on the relaxor ferroelectric Pb(Ni1/3Nb2/3)O3 (PNN) from 80 to 450 K across its Curie temperature. A diffuse phase transition from the paraelectric to ferroelectric phase, associated with a broad phonon frequency dip and a damping maximum, is observed around 200 K. A relaxation mode in the form of a broad Rayleigh wing, whose frequency is strongly temperature dependent above 190 K, is observed and analyzed based on a modified superparaelectric model. Dielectric studies of PNN have also been carried out at several measurement frequencies. The relation between the measurement frequency and the dielectric maximum temperature was analyzed on a modified Vogel-Fulcher model.

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Brillouin and dielectric studies of the phase transition in the relaxor ferroelectric Pb(Ni_1/3Nb_2/3)O₃

Abstract

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