Improved microwave dielectric properties of novel low-permittivity Sn-doped Ca2HfSi4O12 ceramics

2020 ◽  
Vol 129 ◽  
pp. 110887
Author(s):  
Kang Du ◽  
Xiao-Qiang Song ◽  
Zheng-Yu Zou ◽  
Jun Fan ◽  
Wen-Zhong Lu ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Microwave Dielectric Properties ◽  
Microwave Dielectric ◽  
Low Permittivity

scholarly journals TAILORING THE MICROWAVE DIELECTRIC PROPERTIES OF ALKALINE EARTH GEHLENITE TYPE CERAMIC

2013 ◽  
Vol 22 ◽  
pp. 173-178 ◽  
Author(s):  
B. ARUN ◽  
K. M. MANU ◽  
M. T. SEBASTIAN
Keyword(s):  
Dielectric Properties ◽  
Alkaline Earth ◽  
Microwave Dielectric Properties ◽  
Partial Substitution ◽  
X Ray Diffraction ◽  
X Ray ◽  
Isovalent Substitution ◽  
Microwave Dielectric ◽  
Low Permittivity ◽  
Zinc Borosilicate

The effect of glass fluxing and isovalent substitution on the microwave dielectric properties of low permittivity Sr 2 Al 2 SiO 7 (SAS) ceramic has been investigated. X – ray diffraction pattern of all the compositions indicate the formation of tetragonal Gehlenite type ceramics with space group [Formula: see text] (no. 113). The addition of small amounts of lithium magnesium zinc borosilicate (LMZBS) glass to Sr 2 Al 2 SiO 7 ceramic enhanced the densification. Glass fluxing also improved the quality factor and relative permittivity. A small partial substitution of Al 3+ and Si 4+ by Ga 3+ and Ge 4+ was found to degrade the dielectric properties of SAS ceramic. The composition Sr 2 Al 2 SiO 7 + 1 wt. % LMZBS glass showed the best dielectric properties with εr = 7.3, Qu×f = 36000 GHz and τf = −23.0 ppm/°C.

Microwave dielectric properties of low-permittivity CaMgSiO4 ceramic

2017 ◽  
Vol 28 (20) ◽  
pp. 15258-15262 ◽  
Author(s):  
Huanfu Zhou ◽  
Jin Huang ◽  
Xianghu Tan ◽  
Guangchao Fan ◽  
Xiuli Chen ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Microwave Dielectric Properties ◽  
Microwave Dielectric ◽  
Low Permittivity
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