Articles
  • Sintering behavior and microwave dielectric properties of Li2O and In2O3 doped zinc orthosilicate
  • Sang-Ok Yoona, Yun-Han Kima, Shin Kimb, Seong-Min Jeongc and Hoon Parkd,*
  • a Department of Materials Engineering, Graduate School, Gangneung-Wonju National University, Gangneung 25457, Korea b Hasla Co., Ltd, Gangneung 25452, Korea c Energy & Environmental Division, Korea Institute of Ceramic Engineering and Technology (KICET), Jinju 52851, Korea d Department of Advanced Materials Engineering, Korea Polytechnic University, Siheung 15073, Korea
Abstract
Sintering behavior and microwave dielectric properties of Li2O and In2O3 doped zinc orthosilicate having the composition of Zn1.9Si1.05O4, i.e. the Zn1.9-2xLixInxSi1.05O4 system where x = 0.01~0.06, were investigated. The liquid phase occurred by sintering contributed to the densification. As the amount of Li2O and In2O3 increased, the temperature indicating the maximum value of bulk density in each composition decreased from 1250 oC to 1050 oC. And the value of dielectric constant against sintering temperature showed a similar tendency. Also, the value of quality factor decreased as the amount of Li2O and In2O3 increased. The dielectric constant and the quality factor of the composition of x = 0.02 sintered at 1150 oC were 6.49 and 55,437 GHz, respectively.

Keywords: Zinc orthosilicate, Li2O, In2O3, Liquid phase sintering, Dielectric constant, Quality factor. Introduction Microwave and

This Article

  • 2017; 18(3): 192-195

    Published on Mar 31, 2017