TY - JOUR
T1 - Liquid phase sintering of MgTiO3-CaTiO3 microwave dielectric ceramics
AU - Huang, Cheng Liang
AU - Pan, Chung Long
AU - Shium, Shen Jiunn
N1 - Funding Information:
This work was supported by the National Science Council of the Republic of China under grant NSC90-2213-E-006-061 and the Foundation of Jieh-Chen Chen Scholarship, Tainan, Taiwan.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2003/2/3
Y1 - 2003/2/3
N2 - The effects of CuO additive on the microstructures, the phase formation and the microwave dielectric properties of MgTiO3-CaTiO3 ceramics were investigated. The sintering temperature of CuO-doped 0.95MgTiO3-0.05CaTiO3 (95MCT) ceramics can be lowered to 1275°C due to the liquid phase effect. The microwave dielectric properties are found strongly correlate with the sintering temperature as well as the amount of CuO addition. At 1275°C, 0.95MgTiO3-0.05CaTiO3 ceramics with 0.25wt.% CuO addition possesses a dielectric constant εr of 20, a Q × f value of 51000 (at 7 GHz) and a τf value of -8.3 ppm°C-1. By appropriately adjusting the x value in the (1 - x)MgTiO3-xCaTiO3 ceramic system, zero τf value can be obtained.
AB - The effects of CuO additive on the microstructures, the phase formation and the microwave dielectric properties of MgTiO3-CaTiO3 ceramics were investigated. The sintering temperature of CuO-doped 0.95MgTiO3-0.05CaTiO3 (95MCT) ceramics can be lowered to 1275°C due to the liquid phase effect. The microwave dielectric properties are found strongly correlate with the sintering temperature as well as the amount of CuO addition. At 1275°C, 0.95MgTiO3-0.05CaTiO3 ceramics with 0.25wt.% CuO addition possesses a dielectric constant εr of 20, a Q × f value of 51000 (at 7 GHz) and a τf value of -8.3 ppm°C-1. By appropriately adjusting the x value in the (1 - x)MgTiO3-xCaTiO3 ceramic system, zero τf value can be obtained.
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U2 - 10.1016/S0254-0584(02)00311-5
DO - 10.1016/S0254-0584(02)00311-5
M3 - Article
AN - SCOPUS:0037415199
SN - 0254-0584
VL - 78
SP - 111
EP - 115
JO - Materials Chemistry and Physics
JF - Materials Chemistry and Physics
IS - 1
ER -