Origin of polar domains in ferroelectric relaxor of perovskite oxides

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Ferroelectric relaxor has very interesting dielectric and electromechanical properties of useful applications, where polar nanodomains play a crucial role. However, the origins of the nano polar domain formations in the cubic perovskite structures are not fully understood although a spin glass analogue model and an extended random field model are in partial success. From our experimental data of electron diffraction and Raman scattering with a ferroelectric relaxor we want to show that the ferroelectric relaxor has a localized flexoelectricity. We will then propose this flexoelectricity may be the origin of the polar nanodomains in the ferroelectic relaxors of cubic symmetry.
Publisher
KOREAN PHYSICAL SOC
Issue Date
2003
Language
English
Article Type
Article; Proceedings Paper
Keywords

LIQUID-CRYSTALS; X-RAY; SPECTROSCOPY; POLARIZATION; SCATTERING; CERAMICS; NIOBATE

Citation

JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.42, pp.S1009 - S1011

ISSN
0374-4884
URI
http://hdl.handle.net/10203/82449
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