DOI QR코드

DOI QR Code

Dielectric and Piezoelectric Properties of (Na0.5K0.5)0.97NbO3 Ceramics Substituted with CeMnO3

CeMnO3 치환된 (Na0.5K0.5)0.97NbO3 세라믹스의 유전 및 압전 특성

  • Oh, Young-Kwang (Department of Electrical Engineering, Semyung University) ;
  • Yoo, Ju-Hyun (Department of Electrical Engineering, Semyung University) ;
  • Mah, Suk-Burm (Department of Electrical Facilities, Yong-In Songdam College) ;
  • Jeong, Yeong-Ho (Department of Electrical Engineering, Chungju National University)
  • 오영광 (세명대학교 전기공학과) ;
  • 류주현 (세명대학교 전기공학과) ;
  • 마석범 (용인송담대학 조명인테리어학과) ;
  • 정영호 (충주대학교 전기공학과)
  • Received : 2011.01.16
  • Accepted : 2011.02.07
  • Published : 2011.03.01

Abstract

In this study, non-stoichiometric 1-x$[(K_{0.5}Na_{0.5})_{0.97}(Nb_{0.96}Sb_{0.04})O_3]$ + x $CeMnO_3$ + 0.8 mol%CuO + 0.2 wt% $Ag_2O$ (x=0, 0.005) ceramics were prepared by a conventional mixed oxide and carbonate method, their dielectric and piezoelectric properties were investigated with the variations of sintering temperature. As $CeMnO_3$ substitution incereased, the density, piezoelectric constant($d_{33}$) and dielectric constant($\varepsilon_r$) were increased and the mechanical quality factor(Qm) was decreased. At the sintering temperature of $1100^{\circ}C$, the density, electromechanical coupling factor($k_p$), dielectric constant($\varepsilon_r$) and piezoelectric constant($d_{33}$) of 0.5mol% $CeMnO_3$ specimen showed the optimun values of 4.475 $g/cm^2$, 0.437, 552 and 166 pC/N, respectively. However, the mechanical quality factor($Q_m$) showed the minimum value of 380.

Acknowledgement

Supported by : 한국에너지기술평가원(KETEP)

References

  1. B. Jaffe, W. Cook, and Jaffe. H, Piezoelectric Ceramics. (Academic Press. New York, 1971) 185.
  2. L. Egerton and D. Dillom, J. Am. Ceram. Soc., 42, 438 (1958).
  3. B. Seo, J. Yoo, S. Mah, and Y. Jeong, J. KIEEME 22, 930 (2009).
  4. J. Noh, J. Yoo, and Y. Jeong, J. KIEEME 23, 379 (2010).
  5. Y. Lee, D. Kim, J. Yoo, I. Kim, J. Song, and J. Hong, J. KIEEME 22, 489 (2009).
  6. y. D. Gao, K. Kwok, D. Lin, and H. Chan, J. Mater Sci., 44, 2466 (2009). https://doi.org/10.1007/s10853-009-3314-1
  7. J. Yoo, D. Kim, Y. Lee, I. Lee, S. Lee, I. Kim, and J. Song, Integr. Ferroelctr, 105, 18 (2009). https://doi.org/10.1080/10584580903039299
  8. Y. Lee, J. Yoo, K. Lee, I. Kim, J. Song, and Y. Park, J. Alloy Compd., 506, 872 (2010). https://doi.org/10.1016/j.jallcom.2010.07.102
  9. D. Kim, J. Yoo, and Y. Jeong, J. KIEEME 22, 925 (2009).
  10. D. Lin, K. Kwok, H Chan, J. Alloys Compd,. 461, 275 (2008).