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- Title
Effect of Ta<sub>2</sub>O<sub>5</sub> additive on the properties of (Mg<sub>0.75</sub>Zn<sub>0.25</sub>)TiO<sub>3</sub> ceramics with high frequency and high Q-value.
- Authors
Yu, Tao; Chen, Zhicong; Jiang, Chang; Liang, Hongkang; Xiao, Hongzhi; Du, Qianbiao; Li, Hao
- Abstract
The (Mg0.75Zn0.25)TiO3 ceramics with Ta2O5 additive were prepared with solid-state reaction method. Ta2O5 as an additive effectively lowered the sintering temperature to 1100 °C and improved the microstructure of the ceramics. Ta5+ was completely incorporated into the (Mg0.75Zn0.25)TiO3 lattice to form the ilmenite phase (R-3), alongside the emergence of a second phase, MgTi2O5. The increasing content of the second phase caused the cell volume of the main phase to increase. When the Ta2O5 content is less than 5 wt%, the density of the ceramics has the main effect on the εr, while above 5 wt%, the second phase plays a dominant role in the εr of the ceramics. The results showed that when the additive of Ta2O5 is 2 wt%, the ceramics sintered at 1100 °C for 3 h exhibited the excellent microwave dielectric properties of Q × f ~ 108,726 (at 7.9 GHz), εr ~ 18.73 and τf ~ − 59.76 ppm/°C.
- Publication
Journal of Materials Science: Materials in Electronics, 2024, Vol 35, Issue 26, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-024-13477-5