Evidence of the relaxor-paraelectric phase transition in Pb(Fe2/3W1/3)O3 ceramics
作者： Liliana Mitoseriu , Maria M. Carnasciali , Paolo Piaggio , Paolo Nanni
DOI: 10.1063/1.1530711
关键词: Curie 、 Ferroelectric ceramics 、 X-ray crystallography 、 Condensed matter physics 、 Dielectric 、 Diffraction 、 Raman scattering 、 Raman spectroscopy 、 Phase transition 、 Materials science 、 Physics and Astronomy (miscellaneous)
摘要: The transition relaxor-paraelectric in Pb(Fe2/3W1/3)O3 ceramics was studied by x-ray diffraction and Raman scattering at temperatures the range of 85–800 K. For high angles (160° 162°), a slight difference between two phases found. spectra show an evolution with temperature anomalies bands 848 cm−1 147 (shift intensity) Curie temperatures. This behavior is interpreted as experimental evidence perturbations nanopolar ordering related to phase transition.
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