Microwave Dielectric Properties of Li2(M2+)2Mo3O12 and Li3(M3+)Mo3O12 (M=Zn, Ca, Al, and In) Lyonsite‐Related‐Type Ceramics with Ultra‐Low Sintering Temperatures
Microwave Dielectric Properties of Li2(M2+)2Mo3O12 and Li3(M3+)Mo3O12 (M=Zn, Ca, Al, and In) Lyonsite‐Related‐Type Ceramics with Ultra‐Low Sintering Temperatures
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DOI：
10.1111/j.1551-2916.2010.04148.x
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发表时间：
2011-03
影响因子：
3.9
通讯作者：
Di Zhou;C. Randall;L. Pang;Hong Wang;Xinguang Wu;Jing Guo;Gao-qun Zhang;L. Shui;X. Yao
中科院分区：
文献类型：
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作者：
Di Zhou;C. Randall;L. Pang;Hong Wang;Xinguang Wu;Jing Guo;Gao-qun Zhang;L. Shui;X. Yao
在这项工作中，采用固相反应方法制备了Li2(M2+)2Mo3O12和Li3(M3+)Mo3O12（M=Zn、Ca、Al和In）溶水矿相关结构。对于以下成分 Li2Zn2Mo3O12、Li3AlMo3O12 和 Li3InMo3O12 陶瓷形成单相溶浆石材料。而Li 2 Ca 2 Mo 3 O 12 批量组合物产生Li 2 MoO 4 和CaMoO 4 相。所有四种陶瓷在最佳烧结温度下都不与银和铝粉末发生反应，这使得与这些冶金材料共烧电极成为可能。 Li2Zn2Mo3O12陶瓷可在630°C下烧结，相对介电常数为11.1，Q×f值为∼70 000 GHz，14.6 GHz时温度系数为-90 ppm/°C。在 570°C 下烧结的 Li3AlMo3O12 陶瓷的相对介电常数为 9.5，Q×f 值为 ∼50 000 GHz，14.1 GHz 时的温度系数为 -73 ppm/°C。在630°C下烧结的Li3InMo3O12陶瓷的相对介电常数为9.8，Q×f值为∼36 000 GHz，15.0 GHz时的温度系数为-73 ppm/°C。这些陶瓷是不断扩大的超低温共烧陶瓷技术系列的良好候选者，适用于高频范围的滤波器和基板应用。
In this work, the Li2(M2+)2Mo3O12 and Li3(M3+)Mo3O12 (M=Zn, Ca, Al, and In) lyonsite-related structures were prepared using a solid-state reaction method. Single-phase lyonsite materials were formed for the following compositions Li2Zn2Mo3O12, Li3AlMo3O12, and Li3InMo3O12 ceramics. Whereas, the Li2Ca2Mo3O12 batched compositions produced Li2MoO4 and CaMoO4 phases. All the four ceramics did not react with Ag and Al powders at their optimal sintering temperatures, which will permit the possibility of cofired electrodes with these metallurgies. The Li2Zn2Mo3O12 ceramic can be sintered at 630°C with a relative permittivity of 11.1, a Q×f value of ∼70 000 GHz, and a temperature coefficient of −90 ppm/°C at 14.6 GHz. The Li3AlMo3O12 ceramic sintered at 570°C has a relative permittivity of 9.5, a Q×f value of ∼50 000 GHz, and a temperature coefficient of −73 ppm/°C at 14.1 GHz. The Li3InMo3O12 ceramic sintered at 630°C has a relative permittivity of 9.8, a Q×f value of ∼36 000 GHz, and a temperature coefficient of −73 ppm/°C at 15.0 GHz. These ceramics are a good candidate for the expanding family of ultra-low temperature cofired ceramic technologies, for filter and substrate applications at the high-frequency range.