Skip to main content Accessibility help
×
Home

Crystallization Behavior in Precursor-Modified Sol-Gel Lead

  • Titanate Powders (a1), Wei-Heng Shie (a1), Qing Lu (a1) and Wan Y. Shih (a2)

Abstract

The molecular structure of precursors in sol-gel processing of PbTiO3 is modified via β-diketone substitution for the isopropyl groups of titanium isopropoxide. Crystallite size and crystallization behavior are studied using x-ray diffractometry and differential thermal analysis. The crystallite size decreases with increasing amount of β-diketone substitution. Whereas the weight percent of crystalline phase first decreases and then increases with increasing β-diketone substitution. Our results indicate that the β-diketone substitution reduces the size of the structural units in the gel network resulting in smaller crystallite size and more nucleation sites in the powders produced.

Copyright

References

Hide All
1. Scott, J. F. and Araujo, C. A., “Ferroelectric Memories”, Science, 246, 14001405 (1989).
2. Budd, K. D. and Payne, D. A., “Sol-gel Processing of Thin-layer dielectrics in Lead-titanate-based Systems”, Inst. Phys. Conf. Ser. 103 (1), 13 (1989).
3. Budd, K. D., Dey, S. K., and Payne, D. A., “The effect of hydrolysis conditions on the characteristics of Lead Titanate gels and thin films”, Mat. Res. Soc. Symp. Proc., 73, 711 (1986).
4. Blum, J. B. and Gurkovich, S. R., “Sol-gel-derived Lead Titanate”, J. Mat. Sci., 20, 44794483 (1985).
5. Mehrotra, R. C., Bohra, R., and Gaur, D. P., “Metal β-Diketonates and Allied Derivatives”, Academic Press, 1978.
6. Bradley, D. C., Mehrotra, R. C., and Ganur, G. P., “Metal Alkoxides”, Academic Press, New York, 1978.
7. Ribot, F., Toledano, P., and Sanchez, C., “Hydrolysis-Condensation Process of β-Diketonates-Modified Cerium (IV) Isopropoxide”, Chem. Mater., 3, 759764 (1991).
8. Milne, S. J. and Pyke, S. H., “Modified Sol-Gel Process for the Production of Lead Titanate Films”, J. Am. Ceram. Soc., 74, 14071410 (1991).
9. Leaustic, A., Babonneau, F., and Livage, J., “Structural Investigation of the Hydrolysis-Condensation Process of Titanium Alkoxides Ti (OR)4 (OR = OPri, OEt) Modified by Acetylacetone. 1. Study of the Alkoxide Modification”, Chem. Mater., 1, 240247 (1989).

Related content

Powered by UNSILO

Crystallization Behavior in Precursor-Modified Sol-Gel Lead

  • Titanate Powders (a1), Wei-Heng Shie (a1), Qing Lu (a1) and Wan Y. Shih (a2)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.