Shifting τf Value of (Mg0.95Co0.05)TiO3 Ceramics by Ca0.61Nd0.78/3TiO3 Addition

Ping Cheng Chen; Chung Long Pan; Wei Cheng Lin; Chun Hsu Shen

doi:10.4028/www.scientific.net/AMR.807-809.2703

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The Research on the Crack Performance of Airport Pavement Concrete with the Mineral Admixture of Fly Ash
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 807-809Shifting τf Value of (Mg0.95Co0.05)TiO3 Ceramics...

Shifting τf Value of (Mg_0.95Co_0.05)TiO₃ Ceramics by Ca_0.61Nd_0.78/₃TiO₃ Addition

Abstract:

Modification of (Mg_0.95Co_0.05)TiO₃ ceramics by Ca_0.61Nd_0.78/3TiO₃ addition was investigated. The Ca_0.61Nd_0.78/3TiO₃ content plays a significant role in improving the dielectric properties. Microwave dielectric measurement showed an increase in dielectric constant (εr) and temperature coefficient of the resonant frequency (τf) and a decrease in Q value with increasing Ca_0.61Nd_0.78/3TiO₃ content. By properly adjusting the Ca_0.61Nd_0.78/3TiO₃ content, zero temperature coefficient of resonate frequencyτfcan also be obtained. It becomes more promising in the application of wireless system.At 1375°C, the 0.85(Mg_0.95Co_0.05)TiO₃-0.15Ca_0.61Nd_0.78/3TiO₃ceramics possesses excellent microwave dielectric properties: a dielectric constant εr of 24.37, a Qf value of 66200 ( at 7 GHz ) and a τf value of-1.4 ppm/°C.