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
Publisher: American Institute of Physics
Source: Applied physics letters, 2014, v. 105, no. 4, 042904 How to cite?
Journal: Applied physics letters 
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.
URI: http://hdl.handle.net/10397/17275
ISSN: 0003-6951
EISSN: 1077-3118
DOI: 10.1063/1.4891960
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