Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/99134
Title: 0.94(K0.5Na0.5)NbO3–0.06LiNbO3 piezoelectric ceramics prepared from the solid state reaction modified with polyvinylpyrrolidone (PVP) of different molecular weights
Authors: Tan, Chee Kiang Ivan
Yao, Kui
Goh, Phoi Chin
Ma, Jan
Issue Date: 2011
Source: Tan, C. K. I., Yao, K., Goh, P. C.,& Ma, J. (2012). 0.94(K0.5Na0.5)NbO3–0.06LiNbO3 piezoelectric ceramics prepared from the solid state reaction modified with polyvinylpyrrolidone (PVP) of different molecular weights. Ceramics International, 38(3), 2513-2519.
Series/Report no.: Ceramics international
Abstract: Lead-free piezoelectric 0.94(K0.5Na0.5)NbO3–0.06LiNbO3 (0.94KNN–0.06LN) ceramics were prepared by solid state reaction process modified by introducing polyvinylpyrrolidone (PVP) of different molecular weights in the starting raw materials. The chemical interaction between the metal cations and the PVP, particularly through the N in PVP, was observed. The effects of PVP for suppressing the loss of alkali ions, promoting the perovskite phase formation, and improving the piezoelectric properties were characterized and discussed. With molecular weight ranging from 55 K to 1300 K, PVP with lower molecular weight exhibited more significant effect. This study showed that introducing PVP in the starting raw materials may be an effective method for obtaining stoichiometric KNN–LN and other ceramics with volatile alkali ions.
URI: https://hdl.handle.net/10356/99134
http://hdl.handle.net/10220/12812
ISSN: 0272-8842
DOI: 10.1016/j.ceramint.2011.11.021
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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