Behavior of optical phonons near the diffuse phase transition in relaxor ferroelectric PbMg{sub 1/3}Ta{sub 2/3}O{sub 3}
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- Ioffe Physical Technical Institute, 26 Politekhnicheskaya, 194021 St. Petersburg (Russian Federation)
Raman scattering in relaxor ferroelectric PbMg{sub 1/3}Ta{sub 2/3}O{sub 3} (PMT) was investigated in the single-crystalline form in the temperature range of 20-295 K. An anomalous temperature dependence of the integrated intensity and the Raman line contours were found at the diffuse phase transition. A correlation between the anomalies in the integrated intensities and the dispersion of the dielectric response was observed. The distortions of Raman lines with decreasing temperature are discussed.
- OSTI ID:
- 20664936
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 17 Vol. 70; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
FERROELECTRIC MATERIALS
LEAD COMPOUNDS
MONOCRYSTALS
OXIDES
PERMITTIVITY
PHASE TRANSFORMATIONS
PHONONS
RAMAN EFFECT
RAMAN SPECTRA
TANTALUM COMPOUNDS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
SUPERCONDUCTIVITY AND SUPERFLUIDITY
FERROELECTRIC MATERIALS
LEAD COMPOUNDS
MONOCRYSTALS
OXIDES
PERMITTIVITY
PHASE TRANSFORMATIONS
PHONONS
RAMAN EFFECT
RAMAN SPECTRA
TANTALUM COMPOUNDS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K