Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/25144
Title: Lead magnesium niobate-lead titanate fibres by a modified sol-gel method
Authors: Lam, KH
Li, K
Chan, HLW 
Keywords: Ceramics
Sol-gel chemistry
Microstructure
Issue Date: 2005
Publisher: Pergamon Press
Source: Materials research bulletin, 2005, v. 40, no. 11, p. 1955-1967 How to cite?
Journal: Materials research bulletin 
Abstract: Lead magnesium niobate-lead titanate (PMN-PT) ceramic fibres with the nominal composition of 0.65Pb(Mg1/3Nb2/3)O 3-0.35PbTiO3 have been fabricated by a modified sol-gel method. Due to the difficulty of dissolving the magnesium component, the mixed oxide method was used together with the traditional sol-gel method. To obtain crack-free fibres, pyrolysis was carried out at a very slow heating rate under specific atmosphere to control the organic burnout. The thermal and microstructural properties were investigated using thermogravimetric analysis, scanning electron microscopy and X-ray diffraction. The optimum sintering temperature is 1200°C and yields a fibre with a final diameter of around 100 μm. A single PMN-PT fibre has been poled and its electrical properties were measured. The properties of the fibre are found to be better than that of a ceramic disc.
URI: http://hdl.handle.net/10397/25144
ISSN: 0025-5408
DOI: 10.1016/j.materresbull.2005.05.024
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