Peculiarities of Raman spectra and phase states in Pb x Sr1−x TiO3 solid solutions with low lead concentration

Abstract

Micro-Raman study of PbxSr1 − xTiO3 (x = 0.005, 0.01, 0.02, 0.03, or 0.04) solid solutions has been performed in the frequency range 15–1200 cm−1 at several temperatures in the range 10–300 K. The results obtained suggest that the concentration region x < 0.04 in PbxSr1 − xTiO3 solid solutions should most likely be considered as heterophase.