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The Ca(Zn1/3Nb2/3)O3 (CZN) complex perovskite oxide has been studied for its  attractive dielectric properties (εr=34, Qxf=15 890GHz, τf=-48 ppm.°C-1) for  applications such as multilayer ceramics capacitors or hyperfrequency  resonators. Nevertheless, high temperatures (>1250°C) are required to obtain  well dense CZN ceramic, prohibiting any silver co-sintering (Tf (Ag) =  961°C). For that reason, the sintering temperature lowering of CZN by glass  phase’s additions has been investigated. This material is finally sinterable  at low temperature with combined glass phase -lithium salt additions, and  exhibits, at 1MHz, very low dielectric losses, a relatively high dielectric  constant with a good stability versus temperature. The 2%weight of  ZnO-SiO2-B2O3 glass phase and 1%wt of LiF added CZN sample sintered at 920°C  exhibits a relative density higher than 95% and attractive dielectric  properties: a dielectric constant εr of 22, low dielectrics losses (tan (δ)<  10-3), a temperature coefficient of the permittivity τε<100 ppm.°C-1, and an  insulating resistivity higher than 1013Ω.cm. Its interesting properties and  its co-sinterability with silver electrodes make this ceramic suitable for  L.T.C.C applications

CaZn1/3Nb2/3O3-based dielectric ceramics for silver co-sintering applications