| Microwave Dielectric Properties of CaTi0.5Fe0.25Nb0.25O3 Ceramics with CuO Addition |
| Kui-Won Kang, Hyo-Tae Kim1, Joon-Cheol Hwang1, Joong-Hee Nam1, Dong-Hun Yeo |
Korea Institute of Ceramic Engineering and Technology
1Korea Institute of Ceramic Engineering and Technolog |
|
|
|
|
|
| ABSTRACT |
|
The sintering behavior, microstructure and microwave dielectric properties of Ca $Ti_{0.5}$F $e_{0.25}$N $b_{0.25}$ $O_3$ with CuO have been investigated. Among the range of additions, 3 wt％ CuO was observed to perform most satisfactory for acting as a sintering aid. The dielectric properties were found to strongly depend on the sintered densities. The dielectric constant increased with sintering temperatures, while the Q${times}$ $f_{0}$ value affected by second phase. For Ca $Ti_{0.5}$F $e_{0.25}$N $b_{0.25}$ $O_3$ with 3 wt％ CuO sintered at 100$0^{circ}C$ for 2 h, the dielectric properties with an $varepsilon$$_{r}$ value of 56, a Q${times}$ $f_{0}$ value of 3,500 GHz and a $tau$$_{f}$ value of 10 ppm/$^{circ}C$ were obtained and suggested for practical applications.cations.ons.ons.ons. |
| Key words:
${CaTi_{0.5}}{Fe_{0.25}}{Nb_{0.25}}{O_3}$, Microwave dielectric properties, CuO, Sintering aid |
|
|
|
PDF Links
Full text via DOI
Download Citation 
