Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/598
Title: Structure of nanocrystalline powder and thin films of lead lanthanum titanate prepared by the sol-gel process
Authors: Zhou, Qifa
Chan, Helen L. W.
Zhang, Qingqi
Choy, Chung-loong
Subjects: Annealing
Crystal microstructure
Differential thermal analysis
Ferroelectric materials
Nanostructured materials
Powders
Scanning electron microscopy
Temperature control
Thermal effects
Thermogravimetric analysis
Thin films
X-ray diffraction
Issue Date: 1996
Publisher: IEEE
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.
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.
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
Type: Conference Paper
URI: http://hdl.handle.net/10397/598
ISBN: 0780326954
Appears in Collections:MRC Conference Papers & Presentations
AP Conference Papers & Presentations

Files in This Item:
File Description SizeFormat 
sol-gel_96.pdf316.27 kBAdobe PDFView/Open


All items in the PolyU Institutional Repository are protected by copyright, with all rights reserved, unless otherwise indicated. No item in the PolyU IR may be reproduced for commercial or resale purposes.