A low‐permittivity microwave dielectric ceramic BaZnP2O7 and its performance modification

• DOI: 10.1111/jace.17839
• Publication Date: 2021-04-05T16:12:07Z
• Authors: Xiaoqing Chen; Hao Li; Pengcheng Zhang; Houlin Hu; Gongtian Chen; Gaosheng Li
• Keywords: 02 engineering and technology; 0210 nano-technology

AbstractComplex pyrophosphates compounds have attracted much attention as promising candidates for substrate applications. In the work, a low‐permittivity BaZnP2O7 ceramic was synthesized through solid‐state reaction. The pure phase BaZnP2O7 was crystallized in the triclinic P−1 space group. Excellent microwave dielectric properties of the BaZnP2O7 ceramic with εr = 8.23, Qf = 56170 GHz, and τf = −28.7 ppm/°C were obtained at 870°C for 4 h. The substitution of Mg2+ for Zn2+ was found to have positive effects on grain morphology and dielectric properties. Optimized performance of εr = 8.21, Qf = 84760 GHz, and τf = −21.9 ppm/°C was yielded at 900°C for the BaZn0.98Mg0.02P2O7 ceramic. Intrinsic dielectric properties of BaZn1‐xMgxP2O7 ceramics were studied via Clausius–Mossotti equation and complex chemical bond theory.