Microwave dielectric properties and low-temperature cofiring of BaTe4O9 with aluminum metal electrode
Microwave dielectric properties and low-temperature cofiring of BaTe4O9 with aluminum metal electrode
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DOI：
10.1111/j.1551-2916.2005.00613.x
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发表时间：
2005-12-01
影响因子：
3.9
通讯作者：
Shrout, TR
中科院分区：
文献类型：
--
作者：
Kwon, DK;Lanagan, MT;Shrout, TR
研究了BaTe 4 O 9多晶陶瓷化合物作为低温共烧陶瓷（LTCC）微波介质材料的应用。合成了二元相BaTe 4 O 9，随后在仅500 -550摄氏度的温度范围内致密化，这允许与铝金属低温共烧。在12-14 GHz的微波区，在550 ℃下烧结2 h的BaTe 4 O 9陶瓷的介电性能进行了测定。在12 GHz时，其介电常数和Qxf乘积分别为17.5和54700 GHz。谐振频率的温度系数显示为负值，为-90 ppm/℃。在LTCC的评价方面，BaTe 4 O 9组合物被发现是化学相容的，并成功地与高导电铝电极共烧，同时保持良好的电气性能。
Polycrystalline BaTe4O9 ceramic compound was investigated as a promising microwave dielectric compound for low-temperature cofired ceramics (LTCC) applications. The binary phase BaTe4O9 was synthesized and subsequently densified over the temperature range of only 500 degrees-550 degrees C, which allows for low-temperature cofiring with aluminum metal. The dielectric properties of BaTe4O9 ceramics sintered at 550 degrees C for 2 h were determined in the microwave region of 12-14 GHz. The dielectric constant and Qxf product obtained were 17.5 and 54 700 GHz at 12 GHz, respectively. The temperature coefficient of resonance frequency showed a negative value of -90 ppm/degrees C. In terms of its evaluation for LTCC, the BaTe4O9 composition was found to be chemically compatible and successfully cofired with highly conductive aluminum electrode, while maintaining good electrical performance.