Jpn. J. Appl. Phys. 46 (2007) pp. 7084-7088  |Previous Article| |Next Article|  |Table of Contents|
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Fabrication and Electrical Properties of Potassium Niobate Ferroelectric Ceramics

Hajime Nagata, Kenji Matsumoto, Tadayuki Hirosue, Yuji Hiruma, and Tadashi Takenaka

(Received May 23, 2007; accepted June 27, 2007; published online October 22, 2007)

Potassium niobate, KNbO₃ (KN), ceramics were prepared by a modified conventional ceramic fabrication process to characterize their piezoelectric properties. The modified process involving two-stage calcination (first stage at 600 °C and second stage at 1000 °C) is very effective in obtaining KN ceramics with a high density ratio >96% and a high resistivity, ρ, of >10¹² Ω·cm and that are nondeliquescent. The KN ceramics showed good piezoelectric properties in terms of the electromechanical coupling factor, k₃₃, the piezoelectric constant, d₃₃, and the mechanical quality factor, Q_m, which are 0.49, 91.7 pC/N, and 325, respectively. They were poled at a DC electric field of 5 kV/mm at 150 °C.

URL: http://jjap.jsap.jp/link?JJAP/46/7084/
DOI: 10.1143/JJAP.46.7084

References | Citing Articles (23)

1. Y. Makiuchi, R. Aoyagi, Y. Hiruma, H. Nagata, and T. Takenaka: Jpn. J. Appl. Phys. 44 (2005) 4350[JSAP].
2. G. Shirane, R. Newnham, and R. Pepinsky: Phys. Rev. 96 (1954) 581[APS].
3. K. Nakamura, T. Tokiwa, and Y. Kawamura: J. Appl. Phys. 91 (2002) 9272[AIP Scitation].
4. S. Wada, A. Seike, and T. Tsurumi: Jpn. J. Appl. Phys. 40 (2001) 5690[JSAP].
5. L. Egerton and D. M. Dillon: J. Am. Ceram. Soc. 42 (1959) 438[CrossRef].
6. B. Jaffe, W. R. Cook, and H. Jaffe: Piezoelectric Ceramics (Academic Press, New York, 1971) 193.
7. S. Tashiro, H. Nagamatsu, and K. Nagata: Jpn. J. Appl. Phys. 41 (2002) 7113[JSAP].
8. M. Uniyal, K. Singh, S. Bhatt, R. P. Pant, D. K. Suri, and B. S. Semwal: Int. J. Pure Appl. Phys. 41 (2003) 305.
9. P. Dubernet and J. Ravez: Ferroelectrics 211 (1998) 51.
10. R. E. Jaeger and L. Egerton: J. Am. Ceram. Soc. 45 (1962) 209[CrossRef].
11. K. Toda, S. Tokuoka, N. Ohtake, K. Uematsu, and M. Sato: Trans. Mater. Res. Soc. Jpn. 28 (2003) 353.
12. K. Kakimoto, I. Masuda, and H. Ohsato: Jpn. J. Appl. Phys. 43 (2004) 6706[JSAP].
13. H. Birol, D. Damjanovic, and N. Setter: J. Am. Ceram. Soc. 88 (2005) 1754[CrossRef].
14. U. Flueckiger and H. Arend: J. Am. Ceram. Soc. 56 (1977) 575[CrossRef].
15. K. Kakimoto, I. Masuda, and H. Ohsato: J. Eur. Ceram. Soc. 25 (2005) 2719.
16. R. Zuo, J. Rodel, R. Chen, and L. Li: J. Am. Ceram. Soc. 89 (2006) 2010[CrossRef].
17. K. Matsumoto, Y. Hiruma, H. Nagata, and T. Takenaka: Jpn. J. Appl. Phys. 45 (2006) 4479[JSAP].
18. T. Yoshida, Y. Hiruma, R. Aoyagi, H. Nagata, and T. Takenaka: Key Eng. Mater. 301 (2006) 19.
19. H. Ishii, H. Nagata, and T. Takenaka: Jpn. J. Appl. Phys. 40 (2001) 5660[JSAP].
20. K. Kakimoto, I. Masuda, and H. Ohsato: Jpn. J. Appl. Phys. 42 (2003) 6102[JSAP].