Dielectric tunability of Ba0.6Sr0.4TiO3/poly(methyl methocrylate) composites in 1-3-type structure
Dielectric tunability of Ba0.6Sr0.4TiO3/poly(methyl methocrylate) composites in 1-3-type structure
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DOI：
10.1063/1.2807845
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发表时间：
2007-11
影响因子：
4
通讯作者：
Feng Xiang;Hong Wang;Kecheng Li;Yue Chen;Ming-hui Zhang;Z. Shen;X. Yao
中科院分区：
文献类型：
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作者：
Feng Xiang;Hong Wang;Kecheng Li;Yue Chen;Ming-hui Zhang;Z. Shen;X. Yao
采用切割和填充技术制备了Ba0.6Sr0.4TiO3（BST）/聚甲基丙烯酸甲酯（PMMA）1-3型结构的可调复合材料。当BST含量为41.6vol%时，复合材料在10 kHz下的介电常数和损耗角正切分别为1212和0.026，在16 kVScincm直流偏压下的介电调谐率约为36%。理论调谐率和介电常数与实验数据一致。1-3型BST/PMMA复合材料具有高介电可调谐性和低介电常数，可满足可调谐MEMS器件的要求。
The Ba0.6Sr0.4TiO3 (BST)/poly(methyl methacrylate) (PMMA) tunable composites in 1-3-type structure consisting of BST rods in low-permittivity PMMA matrix are fabricated by dice and fill technique. For the composite containing 41.6vol% BST, the permittivity and the loss tangent of the composite are 1212 and 0.026 at 10kHz, respectively, while the dielectric tunability is about 36% under the 16kV∕cm dc bias flied. The theoretical tunability and permittivity are in agreement with the experimental data. The 1-3-type BST/PMMA composites can meet the device requirement for tunable dielectrics with high dielectric tunability and low permittivity.