Effects of V₂O₅ addition on the phase-structure and dielectric properties of zinc titanate ceramics

V₂O₅-doped zinc titanate ceramics (ZnTiO₃) were prepared by conventional mixed-oxide method combined with a semi-chemical processing. The effects of V₂O₅ addition on the phase-structures and the dielectric properties of ZnTiO₃ ceramics were investigated. The results show the sintering temperature of zinc titanate ceramics could be lowered from 1,150 to 930 °C by reducing the size of starting powders using a semi-chemical processing; and with adding V ₂O₅ addition, the densification temperature of ZnTiO ₃ ceramics could be reduced to 875 °C. Also the phase transition temperature from hexagonal ZnTiO₃ phase to cubic Zn ₂TiO₄ was lowered by adding V₂O₅. The best properties were: ε _r∈=∈20.6, Q × f = 8,873 GHz, when the ceramics was sintered at 900 °C, which is a promising candidate in the field of multi-layer devices requiring low sintering temperature (≤ 900 °C).