The dielectric properties of (Mg0.95Ca0.05Zn0.02)(Ti1-xAlx)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 εr of 20.35, dielectric loss tgδ of 2.0×106 and temperature coefficient of dielectric constant αc value of 1.78×106.
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, 2009
, 24(2)
: 371
-373
.
DOI: 10.3724/SP.J.1077.2009.00371
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