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.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
K. Kinoshita and A. Yamaji, J. Appl. Phys. 47, 371 (1976).
W. R. Buessem, L. E. Cross, and A. K. Goswami, J. Am. Ceram. Soc. 49, 33 (1966).
W. R. Buessem, L. E. Cross, and A. K. Goswami, J. Am. Ceram. Soc. 49, 36 (1966).
A. J. Bell, A. J. Moulson, and L. E. Cross, Ferroelectrics 54, 147 (1984).
G. Arlt, D. Hennings, and G. deWith, J. Appl. Phys. 58, 1619 (1985).
K. Okazaki and K. Nagata, J. Am. Ceram. Soc. 56, 82 (1973).
H. T. Martirena and J. C. Burfoot, J. Phys. C: Solid State Phys. 7, 3182 (1974).
K. Kanata, T. Yoshikawa, and K. Kubota, Solid State Commun. 62, 765 (1987).
W.J. Merz, Phys. Rev. 76, 1221 (1949).
Y.P. Ahn, B.H. Kim, and T.S. Lee, J. Kor. Ceram. Soc. 25, 315 (1988).
M.E. Lines and A.M. Glass, Principles and Applications of Ferroelectrics and Related Materials (Clarendon Press, Oxford, 1977), p. 245.
G.A. Samara, Phys. Rev. 151, 378 (1966).
I. A. Cutter and R. McPherson, J. Am. Ceram. Soc. 55, 334 (1972).
K. Mehta and A.V. Virkar, J. Am. Ceram. Soc. 73, 567 (1990).
A. Amin and V. Shukla, J. Am. Ceram. Soc. 68, C167 (1985).
D. Berlincourt and H.H.A. Krueger, J. Appl. Phys. 30, 1804 (1959).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Lee, B.W., Auh, K.H. Effect of grain size and mechanical processing on the dielectric properties of BaTiO3. Journal of Materials Research 10, 1418–1423 (1995). https://doi.org/10.1557/JMR.1995.1418
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1557/JMR.1995.1418