Abstract
An aging effect due to a domain evolution in (K0.5,Na0.5)Nb0.97Sb0.03O3 <001> textured ceramics was investigated by piezoresponse force microscopy. We find that such an aging effect is pronounced in the orthorhombic single phase field. A more uniform and finer domain structure was found with aging, which was believed to originate from defect-migration. After poling, large domains with smooth boundaries were found in the aged condition.
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