Title :
Structural and thermal study of Pb(Zr,Ti,Ce)O3 ceramics
Author :
Ching-Prado, E. ; Perez, W. ; Katiyar, R.S. ; Garg, Ajay ; Agrawal, D.C.
Author_Institution :
Dept. of Phys., Puerto Rico Univ., San Juan, Puerto Rico
Abstract :
Solid solution having compositions Pb[Zrx-yCey Ti1-x]O3 with y=0.0, 0.001, 0.00125, and 0.02 were studied. The samples were prepared from sintered oxides. XRD measurements indicate a mixture of rhombohedral and tetragonal phases in all the samples, where the tetragonal phase increases with increasing CeO2 concentration. Also, the c/a ratio of the tetragonal structure was found to increase with increasing CeO2, content. Precipitation of cerium oxide was observed for the sample with y=0.02, showing that the solubility of CeO2 in lead zirconate is lower than 2%. Raman scattering measurements confirm that all the samples are perovskite in structure, but inhomogeneities were found. The strong line around 465 cm-1, corresponding to F2g symmetry, shows the presence of cerium oxide in the sample with y=0.02. Finally, DSC measurements show that the Curie temperature decreases with increasing CeO2 content
Keywords :
Raman spectra; X-ray diffraction; crystal structure; ferroelectric Curie temperature; ferroelectric materials; lead compounds; permittivity; piezoceramics; precipitation; solid solubility; thermal analysis; Curie temperature; DSC measurements; F2g symmetry; Pb(Zr,Ti,Ce)O3 ceramics; Pb(ZrTiCe)O3; PbTiO3:Zr,Ce; Raman scattering; XRD measurements; increasing CeO2, content; inhomogeneities; perovskite; precipitation; rhombohedral; sintered oxides; solubility; tetragonal; Ceramics; Cerium; Ferroelectric materials; Lead compounds; Phase measurement; Powders; Raman scattering; Solids; X-ray diffraction; X-ray scattering;
Conference_Titel :
Applications of Ferroelectrics, 1994.ISAF '94., Proceedings of the Ninth IEEE International Symposium on
Conference_Location :
University Park, PA
Print_ISBN :
0-7803-1847-1
DOI :
10.1109/ISAF.1994.522310
