The effect of sintering agents on the sinterability and dielectric properties of Li₂Mg₃TiO₆ ceramics

ABSTRACT

The low-fired Li₂Mg₃TiO₆ ceramics were fabricated via doping several multicomponent sintering agents. The effect of multicomponent sintering agents on the sinterability and microwave dielectric properties of Li₂Mg₃TiO₆ ceramics were investigated. The results showed that the densification temperature of Li₂Mg₃TiO₆ ceramics was reduced to 950°C, 975°C and 1000°C by doping LC, LV and LB as sintering agents, respectively. The optimum dielectric properties of ϵ_r = 15.7, Q × f = 70100 GHz and τ_f = −43 ppm/°C were obtained at 950°C for LC-doped Li₂Mg₃TiO₆ ceramics. Such sample was compatible with Ag electrodes, suitable for the low-temperature co-fired ceramics (LTCC) applications.

KEYWORDS:

• Dielectric properties
• microstructure
• Li₂Mg₃TiO₆
• ceramics

Funding

This work is supported by the National Natural Science Foundation of China (Grant no. 51602005), and the Natural Science Research Project of High Education Institutions in Anhui Province of China (Grant no. KJ2017A090).