Microwave Dielectric Properties of B<sub>2</sub>O<sub>3</sub> Doped Ca [(Li<sub>1/3</sub>Nb<sub>2/3</sub>)<sub>0.9</sub><sub>5</sub>Zr<sub>0.0</sub><sub>5</sub>]O<sub>3</sub><sub>−δ </sub>Ceramics

Abstract

The effects of B2O3 on the sinterability and microwave dielectric properties of Ca [(Li1/3Nb2/3)0.95Zr0.05]O3−δ ceramics were investigated. B2O3 doping can effectively reduce sintering temperatue by 150~200oC. The temperature coefficient of resonator frequency τf increased with an increase of B2O3 content and sintering temperatue. When B2O3 of 2wt% were added, the optimum microwave dielectric properties: εr=28.7,Qf =13580GHz and τf= − 7.8×10−6/oC were obtained at the sintering temperature of 950oC.