Use of resonance Raman spectroscopy to study the phase diagram of PbZr0.52Ti0.48O3

摘要

Evidence is presented for the first time that the sharp and continuousspectral changes observed in PbZr0.52Ti0.48O3 (PZT) between 350 and 10 K withthe 647.1 nm wavelength are due to a resonance Raman effect. Such a phenomenoncan be explained by means of a self-trapped exciton emission oxygen deficientcomplex (TiTi' - VO-) of PZT powder whose energy is close to the radiation lineof the laser. This kind of approach should also be very useful to distinguishthe phase transition sequence for other related ferro/ piezoelectric systems.