Trace additive enhances microwave dielectric performance significantly to facilitate 5G communications
Zipeng Huang, Lingxia Li, Jianli Qiao
Abstract
Abstract The ZnZrNb 2 O 8 + x wt% LiF, MgF 2 , CuO (0.00 ≤ x ≤ 0.10), and Zn 1− x Cu x ZrNb 2 O 8 (0.000 ≤ x ≤ 0.050) ceramics were synthesized through solid‐state reaction. Compared with pure ZnZrNb 2 O 8 ceramic, the quality factor and microstructure densification of the specimens with the addition of trace additives were significantly improved. When CuO was utilized as a sintering additive, is mostly impacted by relative density, whereas Q f value is primarily influenced by grain size. When CuO was employed as a dopant, is strongly connected to the dielectric polarizability and lattice vibration, Q f value is driven mostly by chemical bond covalency, and value is primarily dictated by variations in Nb–O bond energy and bond valence. Notably, the ceramics demonstrated excellent characteristics ( = 27.404, Q f = 74 213 GHz, = −52.779 ppm/°C, ZnZrNb 2 O 8 + 0.06 wt% CuO; = 27.448, Q f = 72 520 GHz, = − 53.143 ppm/°C,Zn 0.997 Cu 0.003 ZrNb 2 O 8 ), and these make them promising for use in fifth generation communications.