Lattice dynamics and low-temperature Raman spectroscopy studies of PMN–PT relaxors (pages 1144–1149)
J. A. Lima, W. Paraguassu, P. T. C. Freire, A. G. Souza Filho, C. W. A. Paschoal, J. Mendes Filho, A. L. Zanin, M. H. Lente, D. Garcia and J. A. Eiras
Version of Record online: 16 MAR 2009 | DOI: 10.1002/jrs.2247
By using Raman scattering spectroscopy we have studied the (1 − x)PMN–xPT relaxor close to the morphotropic phase boundary. By analyzing the temperature-dependent Raman spectra, we observed a temperature-induced structural phase transition at 170 K for x = 0.4. Lattice dynamics phonon calculations enable us to interpret the complex Raman signature of the (1 − x)PMN–xPT relaxor.