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Microwave dielectric properties of (1 - x)(Mg0.95Co0.05)TiO3–x(Na0.5La0.5)TiO3 ceramic system
Cheng-Liang Huang,Jhih-Yong Chen,Yen-Hsing Wang,Bing-Jing Li 한국물리학회 2009 Current Applied Physics Vol.9 No.6
The microstructures and the microwave dielectric properties of the (1 - x)(Mg0.95Co0.05)TiO3– x(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 ~22.36, Q × f ~ 110,000 GHz (at 9 GHz), τf ~ 2.9 ppm/℃), is proposed as a candidate dielectric for GPS patch antennas. The microstructures and the microwave dielectric properties of the (1 - x)(Mg0.95Co0.05)TiO3– x(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 ~22.36, Q × f ~ 110,000 GHz (at 9 GHz), τf ~ 2.9 ppm/℃), is proposed as a candidate dielectric for GPS patch antennas.