Abstract
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.
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