Effects of V<sub>2</sub>O<sub>5</sub> Addition on Microwave Dielectric Properties of Li<sub>2</sub>ZnTi<sub>3</sub>O<sub>8</sub> Ceramics for LTCC Applications
- 1 College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
- 2 College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
- 3 Shenzhen Zhenhua Fu Electronics Co., Ltd., Shenzhen, China
- 4 Shenzhen Zhenhua Fu Electronics Co., Ltd., Shenzhen, China
Abstract
The sintering temperature of Li 2 ZnTi 3 O 8 ceramics is still high for LTCC-based applications. In this work, V 2 O 5 was doped as the sintering aid. The sintered density, phase composition, grain size, as well as microwave dielectric properties of Li 2 ZnTi 3 O 8 ceramics with the addition of V 2 O 5 were investigated. Based on our research, V 2 O 5 doping effectively promoted the densification of Li 2 ZnTi 3 O 8 ceramics at about 900 ° C, without affecting the main crystal phase of the ceramics. Li 2 ZnTi 3 O 8 ceramics with 0.5 wt% V 2 O 5 doping (sintered at 900 ° C) exhibited the best microwave dielectric properties (Qf = 22 , 400 GHz at about 6 GHz, ε r = 25.5, and τ f = -10.8 ppm/ ° C). The V 2 O 5 -doped Li 2 ZnTi 3 O 8 ceramics were well cofired with Ag inner paste without cracks and diffusion, indicating its significant potential for LTCC applications.
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