DOI QR코드

DOI QR Code

Piezoelectric Properties of lead free (Na0.44K0.52)Nb0.84O3-Li0.04(Sb0.06Ta0.1)O3 Ceramics with ZnO Addition

ZnO 첨가량에 따른 비납계 (Na0.44K0.52)Nb0.84O3-Li0.04(Sb0.06Ta0.1)O3 세라믹스의 압전 특성

  • 이동현 (광운대 전자정보대 전자재료공학과) ;
  • 이승환 (광운대 전자정보대 전자재료공학과) ;
  • 남성필 (경상대 공대 세라믹공학과) ;
  • 이영희 (광운대 전자재료공학과)
  • Received : 2010.08.24
  • Accepted : 2010.09.27
  • Published : 2010.11.01

Abstract

Electrical and structural properties were investigated on the effects of ZnO and the lead-free NKN-LST ceramics with the addition of ZnO were fabricated by a conventional mixed oxide method. A gradual change in the crystal and microstructure was observed with the increase of ZnO addition. For the NKN-LST-ZnO ceramics sintered at $1050^{\circ}C$, bulk density increased with the addition of ZnO and showed maximum value at addition 2.0mol% of ZnO. Curie temperature of the NKN-LST-ZnO ceramics slightly decreased with adding ZnO. The dielectric constant, piezoelectric constant ($d_{33}$) and electromechanical coupling factor ($k_p$) increased at the small amount of ZnO addition, which might be due to the increase in density. The high piezoelectric properties = 153 pC/N, electromechanical coupling factor = 0.484 and dielectric constant = 2883 were obtained for the NKN-LST+0.5ZnO ceramics sintered at $1050^{\circ}C$ for 2h.

Keywords

References

  1. Seung-Ho Park, Cheol-woo Ahn, Sahn Nahm and Jae-Sung Song, "Microstructure and Piezoelectric Properties of ZnO-added $(Na_{0.5}K_{0.5})NbO_{3}$ Ceramics", The japan Society of Applied Physics, Vol. 43, pp. L1072-L1074, 2004. https://doi.org/10.1143/JJAP.43.L1072
  2. Ruzhong Zuo, Jurgen Rodel Renzheng Cen, and Longtu Li, "Sintering and Electrical Properties of Lead-Free $(Na_{0.5}K_{0.5})NbO_{3}$ Piezoelectric Ceramics", J. Am. Ceram. Soc., 89[6], 2010-2015, 2006. https://doi.org/10.1111/j.1551-2916.2006.00991.x
  3. Bao-Quan Min, Jin-Feng Wang, Peng Qi, and Guo-Zhong Zang, "Piezoelectric Properties of (Li, Sb,Ta) modified (Na, K)$NbO_{3}$ lead-free ceramics", Journal of Applied Physics, 101, 054103, 2007. https://doi.org/10.1063/1.2436923
  4. Young-Hyeok Kim, Dae-Young Heo, Weon-Pil Tai, and Jae-Shin Lee, "Effects of High Energy Ball Milling on the Piezoelectric Proreries of Lead-free $(K_{0.44}Na_{0.52})$ $(Nb_{0.86}Ta_{0.10})$ $-0.04LiSbO_{3}$ Ceramics", Journal of the Korean Ceramic Society, Vol.45, No.6, pp. 363-367, 2008. https://doi.org/10.4191/KCERS.2008.45.6.363
  5. Yasuyoshi Saito, Hisaaki Takao, Toshihiko Tani, Tatsuhiko Nonoyama, Kazumasa Takatori, Takahiko Homma, Toshiatsu Nagaya, and Masaya Nakamura, "Lead-free piezoceramics", Nature, Vol.432, pp. 84-87, 2004. https://doi.org/10.1038/nature03028
  6. Seok-Jung Park, Hwi-Yeol Park, Kyung-Hoon Cho, Sahn Nahm, Hyeung-Gyu Lee, Duk-Hee Kim, and Byung-Hyun Choi, "Effect of CuO on the sintering temperature and piezoelectric properties of lead-free $0.95(Na_{0.5}K_{0.5})NbO_{3}-$ $0.05CaTiO_{3}$ ceramics", Materials Research Bulletin 42 3580-3586, 2008.
  7. Cheol-Woo Ahn, Hwi-Yeol Park, Sahn Nahm, Kenji Uchino, Hyeung-Gyu Lee, and Hwack-Joo Lee, "Structural variation and piezoelectric properties of $0.95(Na_{0.5}K_{0.5})NbO_{3}$ $-0.05BaTiO_{3}$ ceramics", Sensors and Actuators A, 136, pp. 255-260, 2007. https://doi.org/10.1016/j.sna.2006.10.036
  8. Zhao-Xu Chen, Yi Chen, and Yuan-Sheng Jiang, "Comparative study of $ABO_{3}$ perovskite Compounds. 1. $ATiO_{3}$(A = Ca, Sr, Ba, and Pb) Perovskiteds", J. Phys. Chem. B, 106, 9986-9992, 2002. https://doi.org/10.1021/jp013301j
  9. Sang-Ho Moon, Yong-Su Ham, Young-Hie Lee, Song-Min Nam, Jung-Hyuk Koh, "The ferroelectric and piezoelectric properties of $Li_{2}O$-Excess $(Na_{0.51}K_{0.47}Li_{0.02})$ $(Nb_{0.8}Ta_{0.2})O_{3}$ Ceamics", J. Korean Phys. Soc. Vol. 56, No. 1 399-401, 2010. https://doi.org/10.3938/jkps.56.399
  10. Y. Guo, K. Kakimoto, and H. Ohsato, ''Phase Transitional Behavior and Piezoelectric Properties of Na0.5K0.5NbO3–iNbO3 Ceramics,'' Appl. Phys. Lett., 85 [18] 4121–4123, 2004.
  11. R. J. Xie, Y. Akimune, R.Wang, N. Hirosaki, and T. Nishimuna, ''Dielectricand Piezoelectric Properties of Barium-Substitued Sr1.9Ca0.1NaNb5O15 Ceramics,'' Jpn. J. Appl. Phys., 42 [12] 7404–7409 2003.
  12. C. Zaldo, D.S Gilld, R. W. Eason, J. Mendiola, and P. J. Chandler, ''Growthof KNbO3 Thin Films onMgO by Pulsed Laser Deposition,'' Appl. Phys. Lett., 65 [4] 502–504, 1994.
  13. K. Yamanouchi, H. Odagawa, T. Kojima, and T. Matsumura, ''Theoreticaland Experimental Study of Superhigh Electromechanical Coupling Surface Acoustic Wave Propagation in KNbO3 Single Crystal,'' Electron. Lett., 33 [3] 193–194, 1997.
  14. L. Egerton and D. M. Dillon, ''Piezoelectric and Dielectric Properties of Ceramics in the System Potassium Sodium Niobate,'' J. Am. Ceram. Soc., 42 [9] 438–2, 1959.