Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 31, Issue 9, Pages 1861-1864Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2011.02.031
Keywords
Grain growth; Electron microscopy; Ferroelectric properties; Niobates
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Funding
- PAPIIT-UNAM [IN116610-3]
- CONACyT-Mexico
- MICINN (Spain) [MAT 2010-21088-C03-01]
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The complex domain structure of orthorhombic (K(0.5)Na(0.5))NbO(3) (KNN) piezoelectric ceramics has been studied by SEM. The study was performed in samples prepared by microwave-hydrothermal synthesis. The identification of the domain structure has been afforded in KNN ceramics. Abnormal grain growth was observed in the microstructure of KNN ceramics, with an average grain size of 63 mu m. Most of the ferroelectric domains were 90 degrees type with square-net and herringbone structures alternating a-a and a-c configurations. In addition, 180 degrees domains were also identified arranged in the common watermark pattern. (C) 2011 Elsevier Ltd. All rights reserved.
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