Quick Jump

Jpn. J. Appl. Phys. 45 (2006) pp. L30-L32  |Previous Article| |Next Article|  |Table of Contents|
|Full Text PDF (146K)| |Buy This Article|

Letter

Lead-Free Barium Titanate Ceramics with Large Piezoelectric Constant Fabricated by Microwave Sintering

Hirofumi Takahashi, Yoshiki Numamoto, Junji Tani¹, Kazuya Matsuta¹, Jinhao Qiu¹ and Sadahiro Tsurekawa²

Fuji Ceramics Corporation, 2320-11 Yamamiya, Fujinomiya, Shizuoka 418-0111, Japan
¹Institute of Fluid Science, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
²Department of Nanomechanics, Graduate School of Engineering, Tohoku University, 2-1-1 Aramaki-Aza-Aoba 01, Sendai 980-8579, Japan

(Received November 4, 2005; accepted November 10, 2005; published online December 28, 2005)

A lead-free barium titanate (BaTiO₃) ceramics with a high density and a large piezoelectric constant, d₃₃, as manufactured at 1320°C by microwave sintering, using a pure fine powder with a particle size of 100 nm produced by hydrothermal synthesis. The density of the ceramic with a 3.4 µm grain size was more than 98.3% of the theoretical value. The ceramic after poling had a dielectric constant of ε₃₃^T/ε₀ =4200, an electromechanical coupling factor planar mode of k _p =36% and d₃₃ =350 pC/N. The value of d₃₃ is the largest one ever reported for lead-free BaTiO₃ ceramics.

KEYWORDS: BaTiO₃ ceramics, hydrothermal synthesized method, microwave sintering, grain size, dielectric property, piezoelectric property, lead-free, electromechanical coupling factor, piezoelectric constant
URL: http://jjap.ipap.jp/link?JJAP/45/L30/
DOI: 10.1143/JJAP.45.L30

|Full Text PDF (146K)| |Buy This Article| Citation: Plain Text BiBTeX EndNote(RIS) RSS

---

References | Citing Articles (10)

1. H. Nagata, M. Yoshida, Y. Makiuchi and T. Takenaka: Jpn. J. Appl. Phys. 42 (2003) 7401[IPAP].
2. Y. Makiuchi, R. Aoyagi, Y. Hiruma, H. Nagata and T. Takenaka: Jpn. J. Appl. Phys. 44 (2005) 4350[IPAP].
3. Y. Saito, H. Takao, T. Tani, T. Nonoyama, K. Takatori, T. Honma, T. Nagayama and M. Nakamura: Nature 432 (2004) 84[CrossRef].
4. R. Bechman: J. Acoust. Soc. Am. 28 (1956) 347[AIP Scitation].
5. Y. Ohara, K. Koumoto and H. Yanagida: J. Am. Ceram. Soc. 68 (1985) 108[CrossRef].
6. T. Futakuchi, Y. Sakai, N. Fujita and M. Adachi: Jpn. J. Appl. Phys. 42 (2003) 5904[IPAP].
7. J. Itoh, H. Haneda, S. Hishita, I. Sakaguchi, N. Ohashi and D. C. Park: J. Mater. Res. 19 (2004) 3512.
8. H. Chazono and M. Fujimoto: Jpn. J. Appl. Phys. 34 (1995) 5354[IPAP].
9. C. A. Randall, S. F. Wang, D. Laubscher, J. P. Dougherty and W. Huebner: J. Mater. Res. 8 (1993) 871.
10. H. Saito, H. Chazono, H. Kishi and N. Yamamoto: Jpn. J. Appl. Phys. 30 (1991) 2307[IPAP].
11. H. Kishi, Y. Okino, M. Honda, Y. Iguchi and M. Imada: Jpn. J. Appl. Phys. 36 (1997) 5954[IPAP].
12. Y. Sakabe, N. Wada and Y. Hamaji: J. Korean Phys. Soc. 32 (1998) 260.
13. H. Takahashi, K. Kato, J. Qiu and J. Tani: Jpn. J. Appl. Phys. 40 (2001) 724[IPAP].
14. H. Takahashi, S. Tsukamoto, J. Qiu, J. Tani and T. Sukigara: Jpn. J. Appl. Phys. 42 (2003) 6055[IPAP].
15. H. Takahashi, S. Tsukamoto, J. Qiu, J. Tani and T. Sukigara: Jpn. J. Appl. Phys. 42 (2003) 7436[IPAP].
16. E. T. Brajer: Am. Ceram. Soc. Bull. 36 (1957) 333.
17. S. Wada, H. Yasuno, T. Hoshina, S. M. Nan, H. Kakemoto and T. Tsurumi: Jpn. J. Appl. Phys. 42 (2003) 6188[IPAP].
18. T. Watanabe: Mater. Sci. Eng. 166 (1993) 11.
19. S.-F. Liu, S.-E. Park, L. E. Cross and T. R. Shrout: Ferroelectrics 221 (1999) 169.
20. S. Wada, K. Yako, H. Kakemoto and T. Tsurumi: J. Appl. Phys. 98 (2005) 014109[AIP Scitation].

---