Temperature-dependent random field in relaxor ferroelectrics
Temperature dependence of random field is found to be intrinsic in a relaxor ferroelectric (RF) Pb(Yb1/2Nb1/2)O-3-PbTiO3 [PYN-PT] by Baman Optical Activity measurements. Its implications towards the formation of polar nanoregions (PNR) in the relaxor ferroelectrics are explored. Both inter-PNR. relaxation and intra-PNR. relaxation contributing to the very broad and complicated spectrum of relaxation are temperature-dependent and are analyzed by Vogel-Fulcher law and phonon-assisted tunneling model respectively.
- Publisher
- KOREAN PHYSICAL SOC
- Issue Date
- 2005-01
- Language
- English
- Article Type
- Article; Proceedings Paper
- Keywords
RAMAN OPTICAL-ACTIVITY; LEAD MAGNESIUM NIOBATE; PHASE-TRANSITIONS; LIGHT-SCATTERING; POLARIZATION; MODEL; PBMG1/3NB2/3O3; PEROVSKITES; DOMAINS; GLASSY
- Citation
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.46, no.1, pp.350 - 353
- ISSN
- 0374-4884
- Appears in Collection
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