Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/17275
Title: Hot-stage transmission electron microscopy study of (Na, K)NbO3 based lead-free piezoceramics
Authors: Lu, S
Xu, Z
Kwok, KW 
Chan, HLW 
Issue Date: 2014
Source: Applied physics letters, 2014, v. 105, no. 4, 42904, p. 042904-1-042904-5
Abstract: Hierarchical nanodomains assembled into micron-sized stripe domains, which is believed to be associated with outstanding piezoelectric properties, were observed at room temperature in a typical lead free piezoceramics, (Na 0.52K0.48-x)(Nb0.95-xTa0.05)- xLiSbO3, with finely tuned polymorphic phase boundaries (x=0.0465) by transmission electron microscopy. The evolution of domain morphology and crystal structure under heating and cooling cycles in the ceramic was investigated by in-situ hot stage study. It is found that the nanodomains are irreversibly transformed into micron-sized rectangular domains during heating and cooling cycles, which lead to the thermal instability of piezoelectric properties of the materials.
Publisher: American Institute of Physics
Journal: Applied physics letters 
ISSN: 0003-6951
EISSN: 1077-3118
DOI: 10.1063/1.4891960
Rights: © 2014 AIP Publishing LLC.
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in S. Lu et al., Appl. Phys. Lett. 105, 042904 (2014) and may be found at https://dx.doi.org/10.1063/1.4891960
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