Influence of Zn-Al Codoping on Dielectric Properties of 0.95MgTiO3-0.05CaTiO3 Ceramics

doi:10.3724/SP.J.1077.2009.00371

Abstract

Abstract: The dielectric properties of (Mg_0.95Ca_0.05Zn_0.02)(Ti_1-xAl_x)O₃ ceramics prepared by conventional solid-state route were investigated. The results show that MgTiO₃ and CaTiO₃ are the main phases of 95MCT ceramics with codoped Zn-Al, without second phase MgTi₂O₅ is observed but a new phase CaAl₂O₄. Zn-Al additive can lower the sintering temperature of 95MCT ceramics to 1300℃, and improve the dielectric properties. Moreover, it also effectively adjusts the temperature coefficient of dielectric constant. The 95MCT ceramics with x=0.02 possess excellent dielectric properties: dielectric constant ε_r of 20.35, dielectric loss tgδ of 2.0×106 and temperature coefficient of dielectric constant α_c value of 1.78×106.

Key words: 0.95MgTiO₃-0.05CaTiO₃ ceramics, Zn-Al codoped, dielectric properties

CLC Number:

TQ174

YANG Xiu-Ling,DING Shi-Hua,SONG Tian-Xiu,ZHANG Dong. Influence of Zn-Al Codoping on Dielectric Properties of 0.95MgTiO₃-0.05CaTiO₃ Ceramics[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2009.00371.

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Influence of Zn-Al Codoping on Dielectric Properties of 0.95MgTiO₃-0.05CaTiO₃ Ceramics

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