Effect of Nd₂O₃ on the Microwave Dielectric Properties of 0.67CaTiO₃-0.33LaAlO₃ Ceramics

Abstract:

0.67CaTiO₃-0.33LaAlO₃ ceramics doped with Nd₂O₃ were prepared using a conventional two-step solid-state reaction, and the effect of Nd₂O₃ doping on the microwave dielectric properties were studied. A single phase of perovskite structure was confirmed with the Nd₂O₃ doping. The results showed that the addition of Nd₂O₃ obviously improved the density and Q×f values of CTLA ceramics. The dielectric constant were almost not affected and the τ_f values were close to zero with the increase of the doping amount. CTLA ceramics with 0.2 wt% Nd₂O₃ doping sintered at 1380 °C for 4 h exhibited the optimal microwave dielectric properties of ε_r = 45.36, Q×f = 37,890 GHz, τ_f = 7.80 ppm/°C.

• Periodical: Key Engineering Materials (Volume 726)
• Pages: 215-219
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.726.215
• Online since: January 2017
• Authors: Zhan Ming Dou, Gan Wang, Juan Jiang*, Tian Jin Zhang
• Keywords: CTLA Ceramics, Microwave Dielectric Properties, Nd₂O₃-Doped

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