The Dielectric Constant of Ba_{6−3<i>x</i>}(Sm_1−<i>y</i>Nd_<i>y</i>)_8+2<i>x</i>Ti₁₈O₅₄ (<i>x</i> = 2/3) Ceramics for Microwave Communication by Linear Regression Analysis

• Main Authors: Tiancheng He, Caihuan Lv, Wenhao Li, Guohua Huang, Zhihui Hu, Jianmei Xu
• Format: Article
• Language: English
• Published: MDPI AG 2020-12-01
• Series: Materials
• Subjects: microwave dielectric ceramics; Ba_{6−3<i>x</i>}(Sm_1−<i>y</i>Nd<i>_y</i>)_8+2<i>x</i>Ti₁₈O₅₄ (<i>x =</i> 2/3) system; dielectric constant; linear regression analysis
• Online Access: https://www.mdpi.com/1996-1944/13/24/5733

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 Ba_{6−3<i>x</i>}(Sm_1−<i>y</i>Nd<i>_y</i>)_8+2<i>x</i>Ti₁₈O₅₄ (<i>x =</i> 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 Ba_{6−3<i>x</i>}(Sm_1−<i>y</i>Nd<i>_y</i>)_8+2<i>x</i>Ti₁₈O₅₄ (<i>x =</i> 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 <i>Y</i> = −71.168 + 6.946<i>x</i>₁ + 25.799<i>x</i>₃, where <i>Y</i>, <i>x</i>₁ and <i>x</i>₃ 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.