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Microwave dielectric properties of (1 − x)(Mg0.95Co0.05)TiO3x(Na0.5La0.5)TiO3 ceramic system
Authors:Cheng-Liang Huang   Jhih-Yong Chen   Yen-Hsing Wang  Bing-Jing Li
Affiliation:aDepartment of Electrical Engineering, National Cheng Kung University, 1 University Road, Tainan 70101, Taiwan, ROC
Abstract:The microstructures and the microwave dielectric properties of the (1 − x)(Mg0.95Co0.05)TiO3x(Na0.5La0.5)TiO3 ceramic system were investigated. Two-phase system was confirmed by the XRD patterns and the EDX analysis. A co-existed second phase (Mg0.95Co0.05)Ti2O5 was also detected. The microwave dielectric properties are strongly related to the density and the matrix of the specimen. A new microwave dielectric material 0.88(Mg0.95Co0.05)TiO3–0.12(Na0.5La0.5)TiO3, possessing an excellent combination of dielectric properties: εr not, vert, similar 22.36, Q × f not, vert, similar 110,000 GHz (at 9 GHz), τf not, vert, similar 2.9 ppm/°C), is proposed as a candidate dielectric for GPS patch antennas.
Keywords:(Mg0.95Co0.05)TiO3   (Na0.5La0.5)TiO3   Microwave dielectric properties   Low loss
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