Ag–Ba0.75Sr0.25TiO3 composites with excellent dielectric properties
Ag–Ba0.75Sr0.25TiO3 composites with excellent dielectric properties
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DOI：
10.1063/1.2836764
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发表时间：
2008-01
影响因子：
4
通讯作者：
Jiquan Huang;Yongge Cao;M. Hong;P. Du
中科院分区：
文献类型：
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作者：
Jiquan Huang;Yongge Cao;M. Hong;P. Du
在960°C低温下烧结了结构致密的Ba0.75Sr0.25TiO3/Ag（BST/Ag）复合陶瓷。报道了优异的介电性能，例如高介电常数（er = 24000）、低介电损耗和高介电调谐性。的介电常数被发现是几乎与温度和频率无关。在BST陶瓷中引入低熔点金属银是提高复合材料介电性能的关键。这些优异的性能使其在高电荷存储电容器和可调谐滤波器等电子器件中具有潜在的应用前景。
The percolative ceramic composites of Ba0.75Sr0.25TiO3∕Ag (BST/Ag) with dense microstructure were sintered at a low temperature of 960°C. Excellent dielectric properties, such as high dielectric constant (er∼24000), low dielectric loss, and high dielectric tunability, were reported. The dielectric constant is found to be nearly temperature and frequency independent. It is essential to introduce the low-melting-point metal of silver into BST ceramics for significantly enhancing the dielectric properties of the composites. The superproperties make it potential to be used for electronic devices such as high charge-storage capacitors and tunable filters.