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|Title:||Structure of nanocrystalline powder and thin films of lead lanthanum titanate prepared by the sol-gel process|
Chan, Helen L. W.
Differential thermal analysis
Scanning electron microscopy
|Source:||ISE 9 : 9th International Symposium on Electrets : Shanghai, 25-30 September, 1996 : proceedings, p. 656-661.|
|Abstract:||Ultrafine powder and thin films of lead lanthanum titanate (PLT) were prepared by the sol-gel process. The structural variation of the powder with increasing annealing temperature was monitored by differential thermal analysis, thermogravimetric analysis and x-ray diffraction. The lowest temperature for the formation of nanocrystals in the powder was found to be about 500°C. Crystallites of various sizes were obtained by controlling the annealing temperature and time. Thin films of PLT were fabricated by spin casting the sol-gel solution onto Si(111) substrates and the microstructure was analyzed using a scanning electron microscope. By controlling the concentration of the precursor and the processing temperature, PLT thin films with uniform crystallite size could be prepared.|
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|Appears in Collections:||MRC Conference Papers & Presentations|
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