Supported by the National Natural Science Foundation of China under Grant No 10674171.
Polarized Raman spectra of ferroelectric relaxor 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3 (0.67PMN-0.33PT) single crystal are systematically investigated in a wide temperature range from -196 to 600℃ by micro-Raman scatte...