The Influence of La2O3 Additive on the Dielectric Properties of Ba0.6Sr0.4TiO3-MgO Bulk Ceramics


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The influence of La2O3-doping on the dielec- tric properties of Ba0.6Sr0.4TiO3-6wt%MgO was studied. With the increase of La2O3-doping content, the space between adjacent parallel crystal planes of BST-MgO composite first became larger, then smaller. Proper quantity of La2O3 could ensure moderate dielectric constant and reduce the dielectric loss of BST-MgO composite at high frequency, but excess quantity of La2O3 would lower dielectric constant. When the La2O3-doping content was 0.2wt%, the dielectric constant and loss of BST-MgO composite were equal to 93.2 and 0.005 (1MHz), respectively. And the dielectric constant tunability could be obtained to 12.1% (21kV/cm).



Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong




C. L. Xu and H. P. Zhou, "The Influence of La2O3 Additive on the Dielectric Properties of Ba0.6Sr0.4TiO3-MgO Bulk Ceramics", Key Engineering Materials, Vols. 336-338, pp. 249-251, 2007

Online since:

April 2007




[1] L. Davis and L. G. Rubin: J. Appl. Phys. Vol. 24 (1953), p.1194.

[2] C. H. Mueller, R. R. Romanofsky and F. A. Miranda: IEEE Potential Vol. 20 (2001), p.36.

[3] S. S. Gevorgian and E. L. Kollberg: IEEE Trans. Microwave Theory Tech. Vol. 49 (2001), p.2117.

[4] D. S. Korn and H. D. Wu: Integr. Ferroelectr. Vol. 24 (1999), p.215.

[5] V. K. Varadan and V. V. Varadan: Proceedings of SPIE Vol. 2448 (1995), pp.35-40.

[6] R. Babbitt, T. Koscica, W. Drach and Didomenico: Integrated Ferroelectrics Vol. 8 (1995), p.65.

[7] K. R. Carroll, J. M. Pond, D. B. Chrisey, et al.: Appl. Phys. Lett. Vol. 62 (1993), p.1845.

[8] L. C. Sengupta and W. C. Drach: Ferroelectrics Vol. 153 (1999), pp.359-364.

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