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Low-Temperature Sintering and Enhanced Dielectric Properties of BaZr0.2Ti0.8O3-Based Y5V Ceramics with Li2CO3 to Reduce the Sintering Temperature

  • Yanjun Wang
  • Rong Ma
  • Xiaoting Zhang
  • Lili Zhao
  • Bin CuiEmail author
Article

Abstract

We synthesized BaTi0.8Zr0.2O3 (BZT)-based powders using the sol–gel method, and introduced Li2CO3 with a low melting point (723°C) as a source of the liquid phase to reduce the sintering temperature (Ts) and improve the dielectric properties of the BZT-based ceramics. The x-ray powder diffractometer patterns exhibited a perovskite structure in all samples. The scanning electron microscope images revealed that the sinterability of the BZT-based ceramics was improved by adding an appropriate amount (3.0 wt.%) of Li2CO3; Ts decreased from 1280°C to 1100°C. The BZT-based ceramics sintered at 1100°C with 3.0 wt.% Li2CO3 met the Y5V requirements, with good electrical properties: εmax = 17987, εr = 15950, and tan δ = 0.02. The results indicated that Li2CO3 can improve the dielectric properties and reduce the Ts of BZT-based ceramics. Our method therefore represents a less expensive approach for developing materials suitable for use in multilayer capacitors.

Keywords

Sintering temperature density dielectric properties sol–gel method 

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Notes

Acknowledgments

We thank the Shaanxi Province Natural Science Foundation Research Project (Grant No. 2016JZ006), the Key Laboratory of Se-enriched Products Development and Quality Control, Ministry of Agriculture and Rural Affairs/National-Local Joint Engineering Laboratory of Se-enriched Food Development (Grant No. Se-2018B06), and the Shaanxi Light Optoelectronics Material Co., Ltd. (No. 2015610002001920) for funding our research.

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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Yanjun Wang
    • 1
  • Rong Ma
    • 1
    • 2
  • Xiaoting Zhang
    • 1
  • Lili Zhao
    • 3
  • Bin Cui
    • 1
    Email author
  1. 1.Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry and Materials ScienceNorthwest UniversityXi’anPeople’s Republic of China
  2. 2.Faculty of Chemistry and Chemical EngineeringBaoji University of Arts and SciencesBaojiPeople’s Republic of China
  3. 3.School of Information Science and TechnologyNorthwest UniversityXi’anPeople’s Republic of China

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