TY - JOUR
T1 - Microwave dielectric properties of (1 - x)(Mg0.95Zn0.05)TiO3-x(Na0.5La0.5)TiO3 ceramic system
AU - Huang, Cheng Liang
AU - Li, Gung Jie
AU - Wang, Jun Jie
N1 - Funding Information:
This work was supported by the National Science Council of the Republic of China under Grant NSC-96-2221-E-006-117.
PY - 2009/3/20
Y1 - 2009/3/20
N2 - The microstructures and the microwave dielectric properties of the (1 - x)(Mg0.95Zn0.05)TiO3-x(Na0.5La0.5)TiO3 ceramic system were investigated. In order to achieve a temperature-stable material, combining a positive temperature coefficient material with a negative one was applied in this study. (Na0.5La0.5)TiO3, having a large positive τf value, was added to (Mg0.95Zn0.05)TiO3 to compensate its τf. By appropriately adjusting the x value in the ceramic system, zero τf value can be achieved. The microwave dielectric properties are strongly related to the density, the matrix and the second phase of the specimen. A new microwave dielectric material, 0.88(Mg0.95Zn0.05)TiO3-0.12(Na0.5La0.5)TiO3 possessing an εr of 23.39, a Q × f of 103,000 GHz (at 9 GHz) and a τf of 1.1 ppm/°C that is applicable in GPS patch antennas and 3 G passive components, is suggested.
AB - The microstructures and the microwave dielectric properties of the (1 - x)(Mg0.95Zn0.05)TiO3-x(Na0.5La0.5)TiO3 ceramic system were investigated. In order to achieve a temperature-stable material, combining a positive temperature coefficient material with a negative one was applied in this study. (Na0.5La0.5)TiO3, having a large positive τf value, was added to (Mg0.95Zn0.05)TiO3 to compensate its τf. By appropriately adjusting the x value in the ceramic system, zero τf value can be achieved. The microwave dielectric properties are strongly related to the density, the matrix and the second phase of the specimen. A new microwave dielectric material, 0.88(Mg0.95Zn0.05)TiO3-0.12(Na0.5La0.5)TiO3 possessing an εr of 23.39, a Q × f of 103,000 GHz (at 9 GHz) and a τf of 1.1 ppm/°C that is applicable in GPS patch antennas and 3 G passive components, is suggested.
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U2 - 10.1016/j.jallcom.2008.05.007
DO - 10.1016/j.jallcom.2008.05.007
M3 - Article
AN - SCOPUS:61349104502
VL - 472
SP - 497
EP - 501
JO - Journal of the Less-Common Metals
JF - Journal of the Less-Common Metals
SN - 0925-8388
IS - 1-2
ER -