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Effect of CuO and MnO2 on sintering temperature, microstructure, and piezoelectric properties of 0.95(K0.5Na0.5)NbO3-0.05BaTiO(3) ceramics

Authors
Ahn, Cheol-WooNahm, SahnKarmarkar, MakarandViehland, DwightKang, Dong-HeonBae, Kyoo-SikPriya, Shashank
Issue Date
31-Jul-2008
Publisher
ELSEVIER
Citation
MATERIALS LETTERS, v.62, no.20, pp.3594 - 3596
Indexed
SCIE
SCOPUS
Journal Title
MATERIALS LETTERS
Volume
62
Number
20
Start Page
3594
End Page
3596
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/123002
DOI
10.1016/j.matlet.2008.03.062
ISSN
0167-577X
Abstract
In this letter we report the effect of CuO and MnO2 additives on the sintering behavior of 0.95(Na0.5K0.5) NbO3-0.05BaTiO(3) ceramics. It was found that the composition corresponding to 0.95(Na0.5K0.5)NbO3-0.05BaTiO(3)+2.0 mol% CuO+0.5 mol% MnO2, sintered at 950 degrees C for 10 h, exhibited excellent piezoelectric properties corresponding to: k(p)=0.41, d(33)=248 pC/N, Q(m)=305, epsilon(T)(3)/epsilon(0)=1258, and T-c=280 degrees C. These results indicate the prominence of this composition in lead-free systems. (C) 2008 Elsevier B.V. All rights reserved.
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