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PMN-32%PT polycrystal was prepared by Bridgman-ACRT method. Specimens were annealed for 300 hours at the temperature of 950°C. The microstructures of the specimens were investigated with optical and atomic force microscopy. The results indicated that in the microstructure of annealed specimen there were some grain-boundary precipitates in which no ferroelectric domains could be observed. Domain strips corresponded with each other at the grain boundaries in as growth specimens. But in annealed specimens, this kind of correspondence disappeared.
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Acknowledgements
This work was supported by the Ministry of Science and Technology of China through 973-project under Grant No. 2002CB613307, the Natural Science Foundation of Shaanxi Province No. 2003E12, the Natural Science Foundation of Xi'an Jiaotong University and the item of Xi'an Science Technology Bureau No. GG05060.
Paper originally presented at AMF-4, Bangalore, India, December 12–15, 2003; received in final form April 10, 2005. The original Proceedings of the Fourth Asian Meeting on Ferroelectricity (AMF-4) are published in seven earlier volumes of FERROELECTRICS (Volumes 323–329, inclusive).