Microwave Dielectric Properties of Novel Na2Mg5-xZnx(MoO4)6 (x=0–0.09) Ceramics for ULTCC Applications
Microwave Dielectric Properties of Novel Na2Mg5-xZnx(MoO4)6 (x=0–0.09) Ceramics for ULTCC Applications
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DOI：
10.1016/j.materresbull.2021.111355
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发表时间：
2021-04
影响因子：
5.4
通讯作者：
Chengxiong Huang;Jyun-Lin Huang;T. Hsu
中科院分区：
文献类型：
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作者：
Chengxiong Huang;Jyun-Lin Huang;T. Hsu
合成了新型超低温共烧陶瓷Na 2 Mg 5-xZnx（MoO 4）6（x = 0-0.09），系统研究了Zn取代对超低温共烧陶瓷微波介电性能的影响。对样品的拉曼光谱进行了分析。所有样品均能在低于610 °C的温度下烧结，形成空间群为P-1（2）的三斜晶系固溶体。用Zn微量取代Mg可显著提高样品的微波介电性能。x = 0.07的样品在570 °C时的最高Q × f为46，000 GHz，沿着，ε r为7.62，τ f为-25.3 ppm/°C。在570 °C烧结时，当TiO 2的加入量为1mol%时，陶瓷的ε r为8.8，aQ× f为31，100 GHz，τ f为-4.2 ppm/°C。由于样品与Al电极化学兼容，我们预计所研究的ULTCC候选材料将非常有希望用于当今的高频5G应用。
Novel Na2Mg5-xZnx(MoO4)6(x = 0–0.09) microwave dielectrics were synthesized for ULTCC (ultra-low temperature co-fired ceramics) applications while the effect of Zn substitution on the microwave dielectric properties of the ceramics was systematically investigated. The Raman spectrum of the specimen was also analyzed. All samples can be sintered at a temperature lower than 610 °C and formed a triclinic structured solid solution with a space group of P-1 (2). Microwave dielectric properties of the specimens can be dramatically enhanced with minutely substituting Mg with Zn. Specimen with x = 0.07 at 570 °C revealed the highestQ×fof 46,000 GHz along withεrof 7.62 andτfof –25.3 ppm/°C. With 1 mol% of TiO2added, remarkable values combined anεrof 8.8, aQ×fof 31,100 GHz and aτfof –4.2 ppm/°C, can all be achieved for the ceramic sintered at 570 °C. Since the specimen is chemically compatible with the Al electrode, we anticipate that the ULTCC candidate material so investigated would be highly promising for today’s high-frequency 5 G applications.