Microwave dielectric properties and chemical compatibility with silver electrode of low-fired Li2Cu0.2Mg0.8Ti3O8 ceramic
Microwave dielectric properties and chemical compatibility with silver electrode of low-fired Li2Cu0.2Mg0.8Ti3O8 ceramic
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DOI：
10.1016/j.ceramint.2013.02.095
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发表时间：
2013-09
影响因子：
5.2
通讯作者：
Ying Tang;L. Fang;Huanfu Zhou;Qinwen Liu;Hui Zhang
中科院分区：
文献类型：
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作者：
Ying Tang;L. Fang;Huanfu Zhou;Qinwen Liu;Hui Zhang
采用传统固相法在900-975 °C反应2 h制备了一种新型高Q低温微波介质陶瓷，其组成为Li 2Cu 0. 2 Mg 0. 8 Ti 3 O 8，具有立方尖晶石结构。在950 °C下烧结2 h的陶瓷表现出最佳的介电性能，介电常数为28.1，高品质因数为34，300 GHz，谐振频率温度系数为9.4 ppm/°C。Li2Cu0.2Mg0.8Ti3O8陶瓷与Ag电极具有良好的相容性，是一种很有应用前景的LTCC陶瓷材料。
A new high-Q, low-temperature microwave dielectric ceramic with composition Li2Cu0.2Mg0.8Ti3O8and a cubic spinel structure was prepared at 900–975 °C for 2 h by the conventional solid-state route. The ceramic sintered at 950 °C for 2 h exhibits optimum dielectric properties with a moderate dielectric constant of 28.1, a high quality factor of 34,300 GHz and a near-zero temperature coefficient of resonance frequency of 9.4 ppm/°C. The Li2Cu0.2Mg0.8Ti3O8ceramic can be compatible with Ag electrode, which makes it a promising ceramic for LTCC technology application.