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Dielectric properties of La-substituted Pb0.5Ca0.5[(Mg1/3Nb2/3)0.5Ti0.5]O3 ceramics

Published online by Cambridge University Press:  31 January 2011

X. J. Lu
Affiliation:
Institute of Materials Physics & Microstructures, Department of Materials Science & Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
X. M. Chen
Affiliation:
Institute of Materials Physics & Microstructures, Department of Materials Science & Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
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Abstract

Modification of Pb0.5Ca0.5[(Mg1/3Nb2/3)0.5Ti0.5]O3 dielectric ceramics was performed by up to 20 mol% La substitution for Pb and Ca. The temperature coefficient of dielectric constant was significantly reduced by the present approach, while an increased Qf factor was achieved. Good microwave dielectric properties were obtained in a composition Pb0.425Ca0.425La0.1[(Mg1/3Nb2/3)0.5Ti0.5]O3: ε = 125; Qf = 3150 GHz; calculated temperature coefficient of resonant frequency δf = +253 ppm/°C.

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Articles
Copyright
Copyright © Materials Research Society 2001

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References

REFERENCES

1.Swartz, S.L., Shrout, T.R., Schulze, W.A., and Cross, L.E., J. Am. Ceram. Soc. 67, 311 (1984).Google Scholar
2.Cross, L.E., Ferroelectrics 76, 241 (1987).Google Scholar
3.Uchino, K., J. Ceram. Soc. Jpn. 99, 829 (1991).CrossRefGoogle Scholar
4.Uchino, K., Centen. Mem. Issue Ceram. Soc. Jpn. 10, 829 (1999).Google Scholar
5.Jaffe, B., Cook, R.W., and Jaffe, H., Piezoelectric Ceramics (Aca-demic Press, New York, 1972).Google Scholar
6.Newnham, R.E. and Ruschan, G.R., J. Am. Ceram. Soc. 74, 463 (1991).CrossRefGoogle Scholar
7.Kato, J., Kagata, H., and Nishimoto, K., Jpn. J. Appl. Phys. 30, 2343 (1991).CrossRefGoogle Scholar
8.Kato, J., Kagata, H., and Inoue, T., Jpn. J. Appl. Phys. 31, 3144 (1992).CrossRefGoogle Scholar
9.Kagata, H., Kato, J., and Inoue, T., Jpn. J. Appl. Phys. 32, 4332 (1993).CrossRefGoogle Scholar
10.Chen, X.M. and Lu, X.J., J. Appl. Phys. 87, 2516 (2000).CrossRefGoogle Scholar
11.Chen, X.M. and Hu, G.L., Jpn. J. Appl. Phys. (in press).Google Scholar
12.Swartz, S.L. and Shrout, T.R., Mater. Res. Bull. 17, 1245 (1980).CrossRefGoogle Scholar
13.Belsick, J.R., Halliyal, A., Kumar, U., and Newnham, R.E., Am. Ceram. Soc. Bull. 66, 664 (1987).Google Scholar
14.Hakki, B.W. and Coleman, P.D., IRE Trans. Microwave Theory Tech. 8, 402 (1960).CrossRefGoogle Scholar
15.Colla, E.L., Reaney, I.M., and Setter, N., J. Appl. Phys. 74, 3414 (1993).Google Scholar