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Abstract
Europium doped Pb(Zr1-xTix)O3(PZT:Eu3+) ceramics at different sintering temperatures have been synthesized and a photoluminescence study has been done. The crystal structure of PZT:Eu3+ is seen to transform from tetragonal to rhombohedral phase at the morphotrophic phase boundary (MPB) as the sintering temperature of the sample increases above 1200 °C. This crystal phase change has also been reflected in the photoluminescence emission spectra in terms of emission peak position and intensity variation. The change in emission pattern is discussed on the basis of magnetic dipole and electric dipole transitions, and a correlation is observed with Raman measurements. The dielectric and piezoelectric measurements have also been done, and the results are compared with the emission studies. Based on the correlation, it is suggested that the photoluminescence of Eu3+ could be an economically reliable probing technique over other phase probe methods near the morphotrophic phase boundary to detect crystal phases.
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