Effects of CuO on the Dielectric Properties of (Zr_0.8Sn_0.2)TiO₄ Ceramics

Samples were prepared with ceramic processing technology. The effects of ZnO and CuO addition on the microstructures and the dielectric properties of (Zr_0.8Sn_0.2)TiO₄ ceramics were investigated. The results show that the sintering temperature of (Zr_0.8Sn_0.2)TiO₄ is reduced to 1300℃. The density and dielectric constant of CuO doped (Zr_0.8Sn_0.2)TiO₄ ceramics increase with increasing the CuO content, which is opposite to the dielectric loss. XRD results indicate that the sample main crystalline phases are (Zr_0.8Sn_0.2)TiO₄ phase. The dielectric constant value of 40.5 and dielectric loss value of 0.0004(at 1MHz) are archived by the 1% ZnO and 1% CuO sample sintered at 1350℃.