# PSN-PMN-PZT 조성의 CeO2첨가에 따른 압전.유전특성 변화

• 윤만순 (충주대학교 신소재공학과) ;
• 최용길 (충주대학교 신소재공학과) ;
• 어순철 (충주대학교 신소재공학과)
• Published : 2006.09.01

#### Abstract

0.03Pb$(Sb_{0.5}Nb_{0.5})O_{3}-0.03Pb(Mn{1/3}Nb{2/3)O_{3}-(0.94-x)PbTiO_{3}-xPbZrO_{3}$ ceramics doped with $CeO_{2}$ were synthesized by conventional bulk ceramic processing technique. Phases analysis, microstructures and piezoelectric properties were investigated as a function of $CeO_{2}$ content (0.03, 0.05, 0.1 0.3, 0.5 and 0.7 wt%). Microstructures and phases information were characterized using a scanning electron microscope (SEM) and an X-ray diffractometer (XRD). Mechanical quality factor ($Q_{m}$) and coupling factor(kp) were obtained from the resonance measurement method. Both $Q_{m}$ and $k_{p}$ were shown to reach to the maximum at 0.1 wt% $CeO_{2}$. In order to evaluate the stability of resonance frequency and effective electromechanical coupling factor ($K_{eff}$) as a function of $CeO_{2}$, the variation of resonance and anti-resonance frequency were also measured using a high voltage frequency response analyzer under various alternating electric fields from 10 V/mm to 80 V/mm. It was shown that the stability of resonance frequency and effective electromechanical coupling factor were increased with increasing the $CeO_{2}$ contents.

#### References

1. A. J. Moulson and J. M. Herbert, 'Electri-ceramics', (chamman and Hall, New york 1990)
2. B. Jaffe, W. R. Cook, and H. Jaffe, 'Piezoelectric properties of lead zirconate-lead titanate solid solution ceramic', J Appl. Phys., Vol. 25, p. 809, 1954 https://doi.org/10.1063/1.1721741
3. Boutarfaia, A. and Bouaoud, E., 'Tetragonal and rhombohedral phase co-existence in the system: $PbZrO_3-PbTiO_3-Pb(Fe_{1/5}Ni_{1/5},\;Sb_{3/5})O_3$', Ceram. Inter., Vol. 22, p. 281, 1995
4. P. Ari -Gur and L. Benguigui, 'X -ray study of the PZT solid solutions near the morphotropic phase transitions', Solid State Commun., Vol. 15, p. 1077, 1974 https://doi.org/10.1016/0038-1098(74)90535-3
5. Y. W. Sung, J. S. Chang, B. I. Oh, and W. H. Kang, 'PSN-PMN-PT-PZ system', Journal of the Korean Ceramic Society, Vol. 25, No.1, p. 21, 1988
6. S. K. Nag and D. C. Agrawal, 'Piezoelectric and mechanical-properties of ceria-doped lead zirconate titanate ceramics', journal of materials science, Vol. 27, p. 4125, 1992 https://doi.org/10.1007/BF01105115
7. W. Cao and C. A. Randall, 'Grain size and domain size relations in bulk ceramic ferroelectric materials', J Phys, Chem. Solids, Vol. 57, p. 1499, 1996
8. Y. G. Choi, Y. J. Son, J. C. Kwon, K. W. Cho, S. Y. Kwen, T. W. Hong, Y. G. Lee, S. L. Ryu, I. H. Kim, M. S. Yoom, and S. C, Ur, 'Energy efficiency alloy design in PSN-PMN-PZT ceramic sysrem for piezoelectric transfiormer application', Materials Science Forum, Vol. 510-511, p. 690, 2006
9. Y. Gao, K. Uchino, and D. Viehland, 'Effects of rare earth metal substituents on the piezoelectric and polarization properties of $Pb(Zr,Ti)O_3\;-\;Pb(Sb,Mn)O_3$ ceramics', Journal of Applied Physics. Proc., Vol. 92, Iss. 4, p. 2094, 2002