TY - JOUR
T1 - Microwave dielectric properties of mixtures of glass-forming oxides Zn-B-Si and dielectric ceramics MgTiO3-CaTiO3 for LTCC applications
AU - Huang, Cheng Liang
AU - Pan, Chung Long
AU - Lee, Wei Chih
N1 - Funding Information:
This work was co-sponsored by the Delta Electronics, Inc., Taiwan and the National Science Council of the Republic of China under Grant NSC-95-2221-E-006-117.
PY - 2008/8/25
Y1 - 2008/8/25
N2 - Low dielectric constant, low temperature co-fired ceramics (LTCC) using glass-forming oxides (ZnO, B2O3 and SiO2) with/without MgTiO3-CaTiO3 have been prepared by conventional solid-state route. The crystalline phases were studied by the X-ray diffraction and microstructures by the SEM techniques. The materials of different compositional ratio were characterized at microwave frequencies. The microwave dielectric properties of the specimens were found strongly depended on the Zn-B-Si ratios. A short-sintering-time formulation containing Zn-B-Si in a ratio of 35:25:40 and 15 wt% CaTiO3 can possess promising microwave dielectric properties (εr = 7.05, Q × f = 3500 GHz at 16 GHz, and τf = 5.93 ppm/°C) at 900 °C for 0.5 h. It shows not only better properties in comparison with commercial ones but also leaves out the prior glass preparation.
AB - Low dielectric constant, low temperature co-fired ceramics (LTCC) using glass-forming oxides (ZnO, B2O3 and SiO2) with/without MgTiO3-CaTiO3 have been prepared by conventional solid-state route. The crystalline phases were studied by the X-ray diffraction and microstructures by the SEM techniques. The materials of different compositional ratio were characterized at microwave frequencies. The microwave dielectric properties of the specimens were found strongly depended on the Zn-B-Si ratios. A short-sintering-time formulation containing Zn-B-Si in a ratio of 35:25:40 and 15 wt% CaTiO3 can possess promising microwave dielectric properties (εr = 7.05, Q × f = 3500 GHz at 16 GHz, and τf = 5.93 ppm/°C) at 900 °C for 0.5 h. It shows not only better properties in comparison with commercial ones but also leaves out the prior glass preparation.
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U2 - 10.1016/j.jallcom.2007.07.114
DO - 10.1016/j.jallcom.2007.07.114
M3 - Letter
AN - SCOPUS:45449110009
SN - 0925-8388
VL - 462
SP - L5-L8
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
IS - 1-2
ER -