Dielectric Properties of Y3+-Doped Ba0.62Sr0.38TiO3 Ceramics

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Microstructure and dielectric properties of Ba0.62Sr0.38TiO3 ceramics doped with x mol% (x=0.2~0.6) Y2O3 were investigated. SEM showed that Y3+ can accelerate growth of the grains at first, then turn to inhabit growth of the grains with further addition of Y3+ above 0.8mol%. The experimental results showed that the dielectric constants were improved with the additive amount of Y3+ increasing, if the amount of Y3+ increased continuously, the dielectric constants will drop, whereas the dielectric losses of the samples descended rapidly in the beginning, then went up obviously with further addition of Y3+ above 1.0mol%, the optimal dielectric constant and dielectric loss could reach 6700 and 0.0015 in the room temperature, respectively.

Info:

Periodical:

Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong

Pages:

51-53

DOI:

10.4028/www.scientific.net/KEM.336-338.51

Citation:

Y. L. Li et al., "Dielectric Properties of Y3+-Doped Ba0.62Sr0.38TiO3 Ceramics", Key Engineering Materials, Vols. 336-338, pp. 51-53, 2007

Online since:

April 2007

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$35.00

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