Low temperature sintering of Ca[(Li1/3Nb2/3) 1-xTix]O3-δ based microwave dielectric ceramics with glass frit

H. A. Jong-Yoon, Ji Won Choi, Chong Yun Kang, Seok Jin Yoon, Doo Jin Choi, Hyun Jai Kim

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The microstructures and the microwave dielectric properties of Ca[(Li 1/3Nb2/3)1-xTix]O 3-δ (CLNT) ceramics with different amount of glass frit additions were investigated. Addition of glass frit(B2O 3-ZnO-SiO2-PbO system) improved the densification and decreased the sintering temperature from 1150°C to 900°C of Ca[(Li 1/3Nb2/3)1-xTix]O 3-δ microwave dielectric ceramics. The dielectric constants (εr) and bulk density were increased, as increasing glass contents from 10 wt% to 15 wt%. The quality factor (Q · f0), however, was decreased slightly. The temperature coefficients of the resonant frequency (τf) shifted positive value as glass contents were increased. The dielectric properties of Ca[(Li1/3Nb 2/3)0.8Ti0.2]O3-δ with 12wt% glass sintered at 900°C for 3h were εr = 40, Q · f0 = 12,500, τf = -8ppm/°C, respectively. The relationship between the microstructure and dielectric properties of ceramics was studied by X-ray diffraction (XRD), energy dispersive spectroscopy (EDS) and scanning electron microscopy (SEM).

Original languageEnglish
Pages (from-to)1322-1325
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume44
Issue number3
DOIs
Publication statusPublished - 2005 Mar 1
Externally publishedYes

Keywords

  • Addition of glass
  • Dielectric
  • LTCC
  • Microwave

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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