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Title: Structure of nanocrystalline powder and thin films of lead lanthanum titanate prepared by the sol-gel process
Authors: Zhou, Q
Chan, HLW 
Zhang, Q
Choy, CL
Issue Date: 1996
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.
Keywords: Annealing
Crystal microstructure
Differential thermal analysis
Ferroelectric materials
Nanostructured materials
Scanning electron microscopy
Temperature control
Thermal effects
Thermogravimetric analysis
Thin films
X-ray diffraction
Publisher: IEEE
ISBN: 0-7803-2695-4
Rights: © 1996 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
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