Behavior of optical phonons near the diffuse phase transition in relaxor ferroelectricPbMg1∕3Ta2∕3O3

2004/09/08 by S. G. Lushnikov, S. N. Gvasaliya, Ram S. Katiyar +1
Engineering · Materials Science · Physics and Astronomy · #Acoustic Wave Resonator Technologies #Ferroelectric and Piezoelectric Materials #Photorefractive and Nonlinear Optics #cond-mat.mtrl-sci

paper · pdf · doi:10.1103/physrevb.70.172101

published as Phys. Rev. B 70, 172101 (2004)

arxiv created 2004/09/08 · openalex publication_date 2004/11/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Raman scattering in relaxor ferroelectric PbMg_1∕3Ta_2∕3O₃ (PMT) was investigated in the single-crystalline form in the temperature range of 20--295\phantom\rule0.3em0exK. 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.

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