Brillouin and dielectric studies of the phase transition in the relaxor ferroelectric Pb(Ni 1/3Nb 2/3)O 3

Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.1433183

Title:	Brillouin and dielectric studies of the phase transition in the relaxor ferroelectric Pb(Ni 1/3Nb 2/3)O 3
Authors:	Fan, H.J. Kuok, M.H. Ng, S.C. Yasuda, N. Ohwa, H. Iwata, M. Orihara, H. Ishibashi, Y.
Issue Date:	15-Feb-2002
Citation:	Fan, H.J., Kuok, M.H., Ng, S.C., Yasuda, N., Ohwa, H., Iwata, M., Orihara, H., Ishibashi, Y. (2002-02-15). Brillouin and dielectric studies of the phase transition in the relaxor ferroelectric Pb(Ni 1/3Nb 2/3)O 3. Journal of Applied Physics 91 (4) : 2262-2266. ScholarBank@NUS Repository. https://doi.org/10.1063/1.1433183
Abstract:	Brillouin scattering has been performed on the relaxor ferroelectric Pb(Ni 1/3Nb 2/3)O 3 (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. © 2002 American Institute of Physics.
Source Title:	Journal of Applied Physics
URI:	http://scholarbank.nus.edu.sg/handle/10635/114300
ISSN:	00218979
DOI:	10.1063/1.1433183
Appears in Collections:	Staff Publications

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