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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.12 [2005] >
IJEMS Vol.12(6) [December 2005] >
| Title: | A comparative analysis of PBZT synthesized by co-precipitation and sol-gel method |
| Authors: | Goel, P
Yadav, K L |
| Issue Date: | Dec-2005 |
| Publisher: | CSIR |
| IPC Code: | G01N33/38 |
| Abstract: | A comparative structural and
dielectric analysis of bismuth doped PZT ceramics [Pb0.98Bi0.02
(Zr0.52Ti0.48)O3] prepared by co-precipitation
and sol-gel methods has been done. The thermal and crystallization behaviour of
the as prepared powders, structural evolution of the ceramics and dielectric
properties of the sintered ceramics have been analyzed and compared. Different
stages of phase formation have been observed by X-ray diffractogram (XRD) of
the samples calcined at various temperatures. Thermal analysis and XRD both
confirm that the temperature as low as 250ºC is sufficient to achieve the
desired phase in the compounds synthesized by sol-gel method whereas a higher
temperature (~ 500ºC) is required to achieve the pure perovskite phase in case
of the samples derived by chemical co-precipitation method. Ferroelectric
transition temperature (Tc)
and ferro-paraelectric phase transition nature remained the same for both of
the samples. Hence, the sol-gel prepared material PBZT may be used for silicon
based memory device application, where a low synthesis temperature is a major
requirement. |
| Page(s): | 552-556 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.12(6) [December 2005]
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