Ultra-Low Loss Microwave Dielectric Ceramic Li2Mg2TiO5 and Low-Temperature Firing Via B2O3 Addition

2018 ◽  
Vol 47 (11) ◽  
pp. 6383-6389 ◽  
Author(s):  
Chunchun Li ◽  
Huaicheng Xiang ◽  
Changzhi Yin ◽  
Ying Tang ◽  
Yuncui Li ◽  
...  
Keyword(s):  
Low Temperature ◽  
Microwave Dielectric Ceramic ◽  
Low Loss ◽  
Dielectric Ceramic ◽  
Temperature Firing ◽  
B2o3 Addition ◽  
Microwave Dielectric

A new low-loss microwave dielectric ceramic for low temperature cofired ceramic applications

2010 ◽  
Vol 25 (7) ◽  
pp. 1235-1238 ◽  
Author(s):  
Huanfu Zhou ◽  
Xiuli Chen ◽  
Liang Fang ◽  
Dongjin Chu ◽  
Hong Wang
Keyword(s):  
Dielectric Properties ◽  
Low Temperature ◽  
Sintering Temperature ◽  
Microwave Dielectric Properties ◽  
Microwave Dielectric Ceramic ◽  
X Ray Diffraction ◽  
Low Loss ◽  
Dielectric Ceramic ◽  
X Ray ◽  
Microwave Dielectric

A new low sintering temperature microwave dielectric ceramic, Li2ZnTi3O8, was investigated. X-ray diffraction data show that Li2ZnTi3O8 has a cubic structure [P4332(212)] with lattice parameters a = 8.37506 Å, V = 587.44 Å3, and Z = 4 when the sintering temperature is 1050 °C. The Li2ZnTi3O8 ceramic exhibits good microwave dielectric properties with εr about 26.2, Q×f value about 62,000 GHz, and τf about −15 ppm/°C. The addition of BaCu(B2O5) can effectively lower the sintering temperature from 1050 to 900 °C without degrading the microwave dielectric properties. Compatibility with Ag electrode indicates this material can be applied to low temperature cofired ceramic devices.

A new Li0.5Sm0.5WO4 low temperature firing microwave dielectric ceramic

2010 ◽  
Vol 502 (2) ◽  
pp. L20-L23 ◽  
Author(s):  
Haibo Yang ◽  
Ying Lin ◽  
Jianfeng Zhu ◽  
Fen Wang ◽  
Zhonghua Dai
Keyword(s):  
Low Temperature ◽  
Microwave Dielectric Ceramic ◽  
Dielectric Ceramic ◽  
Temperature Firing ◽  
Microwave Dielectric

ZnLi2/3Ti4/3O4: A new low loss spinel microwave dielectric ceramic

2012 ◽  
Vol 32 (2) ◽  
pp. 261-265 ◽  
Author(s):  
Huanfu Zhou ◽  
Xiaobin Liu ◽  
Xiuli Chen ◽  
Liang Fang ◽  
Yiliang Wang
Keyword(s):  
Microwave Dielectric Ceramic ◽  
Low Loss ◽  
Dielectric Ceramic ◽  
Microwave Dielectric

Low temperature cofirable Li2Zn3Ti4O12 microwave dielectric ceramic with Li2O–ZnO–B2O3 glass additive

2013 ◽  
Vol 25 (1) ◽  
pp. 355-360 ◽  
Author(s):  
A. Sayyadi-Shahraki ◽  
E. Taheri-Nassaj ◽  
S. A. Hassanzadeh-Tabrizi ◽  
H. Barzegar-Bafrooei
Keyword(s):  
Low Temperature ◽  
Microwave Dielectric Ceramic ◽  
Dielectric Ceramic ◽  
Microwave Dielectric ◽  
Glass Additive ◽  
B2o3 Glass

Studies on Structural, Microwave Dielectric Properties, and Low-Temperature Sintering of 1.52Li2O-0.36Nb2O5-1.34TiO2 Ceramic

2012 ◽  
Vol 512-515 ◽  
pp. 1226-1230
Author(s):  
Qun Zeng ◽  
Yong Heng Zhou
Keyword(s):  
Dielectric Properties ◽  
Low Temperature ◽  
Sintering Temperature ◽  
Microwave Dielectric Properties ◽  
Microwave Dielectric Ceramic ◽  
Low Temperature Sintering ◽  
Dielectric Ceramic ◽  
Microwave Dielectric ◽  
M Phase ◽  
Two Phases

The structure, microwave dielectric properties and low-temperature sintering of a new Li2O-Nb2O5-TiO2 system ceramic with the Li2O: Nb2O5: TiO2 mole ratio of 1.52: 0.36: 1.34 have been investigated in this study. The 1.52Li2O-0.36Nb2O5-1.34TiO2 (LNT) ceramic is composed of two phases, the “M-Phase” and Li2TiO3 solid solution (Li2TiO3ss) phase. This new microwave dielectric ceramic has low intrinsic sintering temperature ( ~ 1100 oC ) and good microwave dielectric properties of middle permittivity (εr ~38.6), high Q×f value up to 7712 GHz, and near zero τf value (~ 4.64 ppm/oC). In addition, the sintering temperature of the LNT ceramics could be lowered down effectively from 1100 oC to 900 oC by adding 1 wt.% B2O3. Good microwave dielectric properties of εr = 42.5, Q*f =6819 GHz and τf = 2.7 ppm/oC could be obtained at 900 oC, which indicate the ceramics would be promising candidates for low-temperature co-fired ceramics (LTCC) applications.

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