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 |
Appears in Collections: | Journal/Magazine Article |
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