Sintering Mechanism and Microwave Dielectric Characteristics of Low-Fired Mg4Nb2O9 Ceramics for LTCC Applications

2021 ◽  
Vol 221 (1) ◽  
pp. 231-238
Author(s):  
Zhifen Fu ◽  
Zhongyi Yang ◽  
Jianli Ma
Keyword(s):  
Dielectric Characteristics ◽  
Microwave Dielectric ◽  
Sintering Mechanism

Microwave Dielectric Characteristics of BaO-Nd2O3-TiO2 Nano-Particles by Millimeter-Wave Sintering

2007 ◽  
Vol 280-283 ◽  
pp. 31-34 ◽  
Author(s):  
Yong Xiang ◽  
Dao Hua Xie ◽  
Yu Shuang Zhao ◽  
Yi Long Su ◽  
Ji Run Luo
Keyword(s):  
Millimeter Wave ◽  
Layer Structure ◽  
Tungsten Bronze ◽  
Secondary Phase ◽  
Nano Particles ◽  
Very High Frequency ◽  
Dielectric Characteristics ◽  
Low Dielectric ◽  
Fine Grain ◽  
Microwave Dielectric

By means of 34.5 GHz millimeter-wave (MMW) sintering, BaO-Nd2O3-TiO2 microwave ceramic dielectric was prepared from nano-particles of the xBaO×(0.35-x)Nd2O3×0.65TiO2 ternary compound, which possess fine grain, low porosity and good dielectric characteristics. The materials which have ultra-low dielectric loss can be fired by MMW heating at very high frequency, which is unable to be done by normal microwave heating at 2.45 GHz. The sintering temperature is 160 ~ 400°C lower than that of normal firing. The ceramic sample consists of the main phase of Nd2Ti2O7 with perovskite-like layer structure (PLS) and the secondary phase of BaNd2Ti4O12 (Ba4.5Nd9Ti18O54)with perovskite-like tungsten bronze structure, being the same as the results from normal sintering. The excellent microwave characteristics were observed.

Microwave Dielectric Characteristics of Y2BaZnO5Ceramics with Sm Substitution for Y

2002 ◽  
Vol 41 (Part 1, No. 11B) ◽  
pp. 7226-7229 ◽  
Author(s):  
Akinori Kan ◽  
Hirotaka Ogawa ◽  
Hitoshi Ohsato
Keyword(s):  
Dielectric Characteristics ◽  
Microwave Dielectric
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