首页|Dynamics of Central Peaks in the Brillouin Scattering Spectra of Relaxor Ferroelectrics

Dynamics of Central Peaks in the Brillouin Scattering Spectra of Relaxor Ferroelectrics

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High-resolution Brillouin scattering technique was applied to study the dynamics of central peaks (CPs) in two relaxor ferroelectric systems, PLZT-x/65/35 ceramics and PMN-33%PT [001] single crystals, respectively. It was found that CPs appear very close to an intermediate temperature, T_d, for both type of specimens. The temperature dependence of CPs was attributed to the appearance and subsequent growth of polar nanoregions (PNRs) intrinsic to relaxor materials.

relaxor ferroelectricspolar nanoregionscentral peaksPLZTPMN-PT

Ghulam Shabbir、Seiji Kojima

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Physics Department, PINSTECII, Nilorc, Islamabad 44000, Pakistan

Ultra-Broadband Spectroscopy Laboratory, Institute of Materials Science, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan

2010

10.4028/www.scientific.net/KEM.421-422.403

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.421/422
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