Investigation on the Effect of Mn on the Dielectric Properties of Ba0.4Sr0.6TiO3/MgAl2O4/MgO Composite Ceramics

Abstract:

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xMnCO3–(1–x)[70wt% (10wt% MgO–90wt% Ba0.4Sr0.6TiO3)–30wt% MgAl2O4] (where x=0.0, 0.5, 1.0, 2.0, 5.0 and 10.0wt%) composite ceramics have been prepared through the solid-state reactions. Three phases, corresponding to the Ba0.4Sr0.6TiO3(BST), MgAl2O4(MA) and MgO phases, are clearly visible in the composite ceramics. The permittivity peak is initially enhanced and shifted toward a higher temperature and then suppressed, shifted toward a lower temperature. Meanwhile, the tunability (calculated by [ε(E0)−ε(E)]/ε(E0)) is also initially improved and then decreased by doping MnCO3.

Info:

Periodical:

Key Engineering Materials (Volumes 421-422)

Edited by:

Tadashi Takenaka, Hajime Haneda, Kazumi Kato, Masasuke Takata and Kazuo Shinozaki

Pages:

65-68

DOI:

10.4028/www.scientific.net/KEM.421-422.65

Citation:

J. J. Zhang et al., "Investigation on the Effect of Mn on the Dielectric Properties of Ba0.4Sr0.6TiO3/MgAl2O4/MgO Composite Ceramics ", Key Engineering Materials, Vols. 421-422, pp. 65-68, 2010

Online since:

December 2009

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