Low temperature sintering and microwave dielectric properties of Li2ZnTi3O8–TiO2 ceramics doped with BaO–B2O3–ZnO glass

  • Guojin Shu
  • Qiao Zhang
  • Fan Yang
  • Fancheng MengEmail author
  • Huixing LinEmail author


A low temperature co-fired ceramic (LTCC) material of Li2ZnTi3O8–TiO2 (L2ZT3–TiO2) doped with BaO–B2O3–ZnO (BBZ) glass were prepared by conventional solid-state method. The effects of BBZ glass on the phase composition, microstructure, and microwave dielectric properties were investigated. The results indicated that BBZ glass as a sintering aid could effectively reduce the sintering temperature of L2ZT3–TiO2 ceramic below 950 °C. The XRD patterns indicated that L2ZT3–TiO2 ceramic consisted of Li2ZnTi3O8 and TiO2 phases. BBZ glass addition did not change the phase composition. In addition, the SEM demonstrated that BBZ glass could significantly improve the grain growth and densification. The sintering mechanism was analyzed through the wetting behavior and the activation energy (Ea). When added 2.5 wt% BBZ glass, the average activation energy reduced from 492.38 ± 139.03 to 370.69 ± 20.98 kJ/mol, which indicated that the BBZ glass not only effective lowered the sintering temperature but also promoted the sintering process. The L2ZT3–TiO2 ceramic with 2.5 wt% BBZ sintered at 925 °C for 4 h had excellent microwave dielectric properties of εr = 26.3, Q × f = 36,554 GHz and τf = − 4.16 ppm/°C. In addition, the good chemical compatibility of this material with Ag electrode could make it as a potential candidate for LTCC technology.



This work was financially supported by the Open Project Program of Key Laboratory of Inorganic Functional Materials and Devices, Chinese Academy of Sciences (Grant No. KLIFMD-2015-06).


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Authors and Affiliations

  1. 1.College of Materials Science and EngineeringChongqing University of TechnologyChongqingPeople’s Republic of China
  2. 2.Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of CeramicsChinese Academy of SciencesShanghaiPeople’s Republic of China

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