Jf. Meng et al., FERROELECTRIC PHASE-TRANSITION IN NANOCRYSTALLINE LEAD ZIRCONATITANATE SYSTEM BY RAMAN-SCATTERING, Chinese Physics Letters, 11(6), 1994, pp. 345-348
The Raman spectra of PbZr0.3Ti0.7O3 for different grain size as well a
s at high temperature and high pressure have revealed that its structu
re is transformed from tetragonal to quasi-cubic phase with decreasing
grain size. The phase transition temperature drops down to a lower te
mperature and the pressure-induced phase transition can be correlated
with the diffuse phase transition.