Abstract
The electronics related to the fifth generation mobile communication technology (5G) are projected to possess significant market potential. High dielectric constant microwave ceramics used as filters and resonators in 5G have thus attracted great attention. The Ba6−3x(Sm1−yNdy)8+2xTi18O54 (x = 2/3) ceramic system has aroused people’s interest due to its underlying excellent microwave dielectric properties. In this paper, the relationships between the dielectric constant, Nd-doped content, sintering temperature and the density of Ba6−3x(Sm1−yNdy)8+2xTi18O54 (x = 2/3) ceramics were studied. The linear regression equation was established by statistical product and service solution (SPSS) data analysis software, and the factors affecting the dielectric constant have been analyzed by using the enter and stepwise methods, respectively. It is found that the model established by the stepwise method is practically significant with Y = −71.168 + 6.946x1 + 25.799x3, where Y, x1 and x3 represent the dielectric constant, Nd content and the density, respectively. According to this model, the influence of density on the dielectric constant is greater than that of Nd doping concentration. We bring the linear regression analysis method into the research field of microwave dielectric ceramics, hoping to provide an instructive for the optimization of ceramic technology.
Highlights
With the development of mobile communication equipment and portable terminals towards miniaturization and multifunctionality, the demand for filters and resonators have been increasing steadily
The relationships between the dielectric constant, Nd dopant, sintering temperature and the density have been established by using the models, which is valuable for the development of high-performance BaO-Ln2 O3 -TiO2 dielectric ceramics for microwave communication applications
According to the XRD standard card PDF #43-0235, the ceramics were pure phase Ba6−3x (Sm1−y Ndy )8+2x Ti18 O54 (x = 2/3) solid solution with Nd contents ranging from y = 0 to 0.4
Summary
With the development of mobile communication equipment and portable terminals towards miniaturization and multifunctionality, the demand for filters and resonators have been increasing steadily. The re are three important parameters to evaluate the ceramics: dielectric constant εr , quality factor Qf and temperature coefficient of resonate frequency τf. The effect of co-doping of Sm and Nd on the properties of Ba6−3x (Sm1−y Ndy )8+2x Ti18 O54 has been investigated [20,21], the statistical analysis method was rarely used to study the factors affecting the performance. In this paper, we applied the enter and stepwise methods to create the mathematical models and analyze the factors that affect the dielectric constant of Ba6−3x (Sm1−y Ndy )8+2x Ti18 O54 The relationships between the dielectric constant, Nd dopant, sintering temperature and the density have been established by using the models, which is valuable for the development of high-performance BaO-Ln2 O3 -TiO2 dielectric ceramics for microwave communication applications
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