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

doi:10.1143/JJAP.44.1322

Low temperature sintering of Ca[(Li_1/3Nb_2/3) _1-xTi_x]O_3-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

KU-KIST Graduate School of Converging Science and Technology

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

The microstructures and the microwave dielectric properties of Ca[(Li _1/3Nb_2/3)_1-xTi_x]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 _1/3Nb_2/3)_1-xTi_x]O _3-δ microwave dielectric ceramics. The dielectric constants (ε_r) 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 (τ_f) shifted positive value as glass contents were increased. The dielectric properties of Ca[(Li_1/3Nb _2/3)_0.8Ti_0.2]O_3-δ with 12wt% glass sintered at 900°C for 3h were ε_r = 40, Q · f₀ = 12,500, τ_f = -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 language	English
Pages (from-to)	1322-1325
Number of pages	4
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	44
Issue number	3
DOIs	https://doi.org/10.1143/JJAP.44.1322
Publication status	Published - 2005 Mar

Keywords

Addition of glass
Dielectric
LTCC
Microwave

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.44.1322

Cite this

Low temperature sintering of Ca[(Li_1/3Nb_2/3) _1-xTi_x]O_3-δ based microwave dielectric ceramics with glass frit. / Jong-Yoon, H. A.; Choi, Ji Won; Kang, Chong Yun et al.
In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 44, No. 3, 03.2005, p. 1322-1325.

Research output: Contribution to journal › Article › peer-review

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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).",

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