Title :
Properties of nanocrystalline PT powder and PT/P(VDF-TrFE) 0-3 nanocomposites
Author :
Chen, Y. ; Chan, H.L.W. ; Choy, C.L.
Author_Institution :
Dept. of Appl. Phys., Hong Kong Polytech. Univ., Kowloon, Hong Kong
Abstract :
Nanometer-size powder of lead titanate (PT) was prepared using the sol-gel process. The PT gel was annealed at various temperatures to produce powder with different particle sizes. The structural variation of the PT powder with annealing temperatures was studied by X-ray diffraction (XRD), thermogravimetric analysis (TGA), differential thermal analysis (DTA) and differential scanning calorimetry (DSC). The crystallite size and particle size of the PT powder were measured by XRD and a particle size analyzer, respectively. PT/P(VDF-TrFE) 0-3 composites with a PT volume fraction of 0.4 were prepared by using PT powder of size 30 nm to 270 nm. The permittivities of the composites were measured using an impedance analyzer. After poling, the piezoelectric and pyroelectric coefficients of the composites were also determined
Keywords :
X-ray diffraction; filled polymers; lead compounds; nanostructured materials; permittivity; piezoelectric materials; powder technology; pyroelectricity; sol-gel processing; thermal analysis; PT/P(VDF-TrFE) 0-3 nanocomposite; PbTiO3; X-ray diffraction; annealing; crystallite size; differential scanning calorimetry; differential thermal analysis; impedance analyzer; nanocrystalline PT powder; particle size; permittivity; piezoelectric coefficient; pyroelectric coefficient; sol-gel processing; thermogravimetric analysis; Annealing; Calorimetry; Crystallization; Particle measurements; Permittivity measurement; Powders; Temperature; Titanium compounds; X-ray diffraction; X-ray scattering;
Conference_Titel :
Applications of Ferroelectrics, 1996. ISAF '96., Proceedings of the Tenth IEEE International Symposium on
Conference_Location :
East Brunswick, NJ
Print_ISBN :
0-7803-3355-1
DOI :
10.1109/ISAF.1996.598063
