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Effect of grain size and mechanical processing on the dielectric properties of BaTiO3

Published online by Cambridge University Press:  03 March 2011

B.W. Lee  and
K.H. Auh
B.W. Lee*
Affiliation:
Department of Inorganic Materials Engineering and CMI, Hanyang University, Seoul 133–791, Korea
K.H. Auh
Affiliation:
Department of Inorganic Materials Engineering and CMI, Hanyang University, Seoul 133–791, Korea
*
a)Present address: Department of Materials Engineering, Korea Maritime University, Pusan 606–791, Korea.
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Abstract

Dielectric properties of polycrystalline BaTiO3 ceramics having grain sizes of 1 to 40 μm have been studied. Fine-grained ceramic BaTiO3 of 1 μm average grain size has 90°domains and has shown higher dielectric constant, lower ferroelectric transition temperature (Tc), and lower transition energy than coarser-grained material. 90°domain switching was preferentially produced in the fine-grained BaTiO3 as a result of abrasion. For the fine-grained BaTiO3, the dielectric constant decreased with one-dimensional pressure, whereas, for the coarse-grained material, the dielectric constant increased before decreasing with the pressure. The one-dimensional pressure resulted in increased Tc of both the fine- and coarse-grained BaTiO3, with the effect being the greatest for the coarse-grained material. The relationship between these results and internal stress, and the effect of external pressure imposed on internally stressed lattice, were discussed.

Type
Articles
Information
Journal of Materials Research , Volume 10 , Issue 6 , June 1995 , pp. 1418 - 1423
Copyright
Copyright © Materials Research Society 1995

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References

REFERENCES

1Kinoshita, K. and Yamaji, A., J. Appl. Phys. 47, 371 (1976).CrossRefGoogle Scholar
2Buessem, W. R., Cross, L. E., and Goswami, A. K., J. Am. Ceram. Soc. 49, 33 (1966).CrossRefGoogle Scholar
3Buessem, W. R., Cross, L. E., and Goswami, A. K., J. Am. Ceram. Soc. 49, 36 (1966).CrossRefGoogle Scholar
4Bell, A. J., Moulson, A. J., and Cross, L. E., Ferroelectrics 54, 147 (1984).CrossRefGoogle Scholar
5Arlt, G., Hennings, D., and deWith, G., J. Appl. Phys. 58, 1619 (1985).CrossRefGoogle Scholar
6Okazaki, K. and Nagata, K., J. Am. Ceram. Soc. 56, 82 (1973).CrossRefGoogle Scholar
7Martirena, H. T. and Burfoot, J. C., J. Phys. C: Solid State Phys. 7, 3182 (1974).CrossRefGoogle Scholar
8Kanata, K., Yoshikawa, T., and Kubota, K., Solid State Commun. 62, 765 (1987).CrossRefGoogle Scholar
9Merz, W. J., Phys. Rev. 76, 1221 (1949).CrossRefGoogle Scholar
10Ahn, Y. P., Kim, B. H., and Lee, T. S., J. Kor. Ceram. Soc. 25, 315 (1988).Google Scholar
11Lines, M. E. and Glass, A. M., Principles and Applications of Ferroelectrics and Related Materials (Clarendon Press, Oxford, 1977), p. 245.Google Scholar
12Samara, G. A., Phys. Rev. 151, 378 (1966).CrossRefGoogle Scholar
13Cutter, I. A. and McPherson, R., J. Am. Ceram. Soc. 55, 334 (1972).CrossRefGoogle Scholar
14Mehta, K. and Virkar, A. V., J. Am. Ceram. Soc. 73, 567 (1990).CrossRefGoogle Scholar
15Amin, A. and Shukla, V., J. Am. Ceram. Soc. 68, C167 (1985).CrossRefGoogle Scholar
16Berlincourt, D. and Krueger, H.H.A., J. Appl. Phys. 30, 1804 (1959).CrossRefGoogle Scholar