| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1616503 | Journal of Alloys and Compounds | 2012 | 6 Pages |
Solid solutions of [(Mg, Zn)]2TiO4–Co2TiO4 were used to prepare [(Mg1−xZnx)0.95Co0.05]2TiO4 have been fabricated using solid-state synthesis for mobile communications. The effect of Zn2+ and Co2+ substitution were to enhance Q × f value and densification sintering at lower temperature compared to Mg2TiO4 which sintered at 1450 °C. As an optimal compose, [(Mg0.5Zn0.5)0.95Co0.05]2TiO4 successfully demonstrated a dielectric constant of 18.18, a Q × f of 206,000 GHz and a τf value of −20.8 ppm/°C sintered at 1225 °C. The maximum quality factor multiples resonant frequency (Q × f) value of around 2100,000 GHz was obtained for the [(Mg0.6Zn0.4)0.95Co0.05]2TiO4, and added more Zn2+, the Q × f decrease [(Mg0.5Zn0.5)0.95Co0.05]2TiO4.
► The quality factor of [(Mg1−xZnx)0.95Co0.05]2TiO4 solid solutions decreased with increasing Zn2+ content, whereas that of [(Mg1−xZnx)0.95Co0.05]2TiO4 solid solutions. ► The Q × f value of [(Mg1−xZnx)0.95Co0.05]2TiO4 increased dramatically from 55,000 to 200,000 GHz. ► [(Mg0.5Zn0.5)0.95Co0.05]2TiO4 successfully demonstrated a dielectric constant of 18.18, a Q × f of 206,000 and a TCF value of −20.8 ppm/°C after firing at a relatively lower sintering temperature of 1225 °C.
