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Low-Temperature Sintering and Piezoelectric Properties of (Na0.5K0.5)NbO3 Lead-Free Piezoelectric Ceramics

Authors
Park, Hwi-YeolSeo, In-TaeChoi, Jae-HongNahm, SahnLee, Hyeung-Gyu
Issue Date
1월-2010
Publisher
WILEY
Citation
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, v.93, no.1, pp.36 - 39
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume
93
Number
1
Start Page
36
End Page
39
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/117245
DOI
10.1111/j.1551-2916.2009.03359.x
ISSN
0002-7820
Abstract
(Na0.5K0.5)NbO3 (NKN) ceramic with 1.5 mol% CuO added (NKNC) was well sintered even at a low temperature of 900 degrees C with the addition of ZnO. Most of the ZnO reacted with the CuO and formed the liquid phase that assisted the densification of the specimens at 900 degrees C. A few Zn2+ ions entered the matrix of the specimens and increased the coercive field (E-c) and Q(m) values of the specimens. High-piezoelectric properties of k(p) = 0.37, Q(m) =755, and epsilon(T)(3)/epsilon(0)=327 were obtained from the NKNC ceramics containing 1.0 mol% ZnO sintered at 900 degrees C for 2 h.
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