A new method to characterize a relative volume to the c-domain in PZT films based on Raman spectra

ABSTRACT We have investigated polarized Raman spectra of epitaxial Pb(ZrxTi1-x)O3 (PZT) thin films (x = ∼0.35) in which the volume ratio of the polar c-domains is systematically varied from 4 to 96% relative to the non-polar a-domains, and a new method using polarized Raman spectroscopy to characterize a relative volume of c-domain in a PZT film is proposed. This method depends on discovery that an intensity of A 1 (1TO) is proportional to the relative volume of c-domain. Polarized Raman spectroscopy is necessary to separate the peaks from A 1(1TO) and B 1 modes to any other modes.