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Title: XRD study on d-values of modified PbTiO3 ceramics during poling process
Authors: Zhang, YW
Tang, XG
Kuang, AX
Chan, HLW 
Keywords: PbTiO3 ceramics
Residual stress
Issue Date: 2011
Publisher: Scientific.Net
Source: Advanced materials research, 2011, v. 177, p. 37-40 How to cite?
Journal: Advanced materials research 
Abstract: The Calcium modified PbTiO3 ceramics with large piezoelectric anisotropy was poled in consecutive steps. X-ray diffraction (XRD) found that the values of inter-planar spacing, d002 and d200, increased with poling field at initial poling stages. A noticeable drop of the d002 and d200 at the coercive field was observed. The residual stresses measured by the ψ angle tilt method were introduced. The relations of d002-sin2ψ and d200-sin 2ψ at different poling stages were simulated by a mathematic model. The linear terms in the model are related to the macro-stress which may cause an elastic deformation; the exponential term in the model is related to the micro-stress which may cause a plastic deformation by the 90° domain switch. The results show that macro-stress and micro-stress decreased and the decay speed along ψ angle increased as to the d002 lattice spacing. The residual stresses related to the d200 lattice spacing were almost not changed.
Description: 1st Annual Meeting on Testing and Evaluation of Inorganic Materials, Nanchang, 28-30 April 2010
ISBN: 9783037850138
ISSN: 1022-6680
EISSN: 1662-8985
DOI: 10.4028/
Appears in Collections:Conference Paper

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