Raman scattering and relaxor properties investigations in niobium doped lead zirconate titanate PZT 97/3, 96/4, 95/5

Abstract
Raman scattering, dielectric and electrical properties have been studied systematically in Nb modified PZT 97/3, 94/6 and 95/5 ceramics. The Raman spectra temperature dependence is discussed in relation with the dielectric and electric results in order to understand the occurrence of the antiferroelectric, ferroelectric and paraelectric phase transitions and with the relaxor behaviour appearing in such materials.