Microwave dielectric properties of [(Mg0.5Zn0.5)0.95Co0.05]2TiO4 ceramics with BaCu(B2O5) sintered at low temperatures

► [(Mg0.5Zn0.5)0.95Co0.05]2 had a dielectric constant of 16.8. ► [(Mg0.5Zn0.5)0.95Co0.052]TiO4 had a quality factor of 28,000 GHz. ► The dielectric constant was affected by the density. ► The quality factor was dominated by the density.