Magnetic and dielectric properties of Li0.63Zn0.37Fe2O4−xCaTiO3 composites for LTCC application

2016 17th International Conference on Electronic Packaging Technology (ICEPT) Pub Date : 2016-08-01 DOI:10.1109/ICEPT.2016.7583277

Y. Gao, Jie Li, Qiang Li, Guokun Ma, Ximeng Yu, Huaiwu Zhang

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Abstract

Li_0.63Zn_0.37Fe₂O_4-xCaTiO₃ (x=0wt%, 4wt%, 8wt%, 12wt%, 16wt%) composites were prepared by the solid state reaction method and sintered at 920 °C with slight Bi₂O₃ additive. The phase formations, structure, magnetic and dielectric properties of composites were investigated. The results revealed that the composites contained two phase formations, with no other phases. Scanning electron microscope and bulk density showed that densification of composites was enhanced by adding CaTiO₃material. Vibrating sample magnetometer indicated the saturation magnetization decreased from 46.2 emu/g to 30.8 emu/g, while the coercivity increased from 38.7 Oe to 46.8 Oe. Meanwhile, LiZn-CTO composites possessed high dielectric permittivity (ε'_max=31.2) and magnetic permeability (μ'_max=20.6), which can be used in LTCC integrated devices such as electromagnetic interference filters and antennas.

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LTCC用Li0.63Zn0.37Fe2O4−xCaTiO3复合材料的磁性和介电性能

采用固相反应法制备Li0.63Zn0.37Fe2O4-xCaTiO3 (x=0wt%， 4wt%， 8wt%， 12wt%， 16wt%)复合材料，并在920℃下添加少量Bi2O3进行烧结。研究了复合材料的相形成、结构、磁性和介电性能。结果表明，复合材料包含两种相，没有其他相。扫描电镜和堆积密度分析表明，catio3材料的加入增强了复合材料的致密性。振动样品磁强计表明，饱和磁化强度从46.2 emu/g下降到30.8 emu/g，矫顽力从38.7 Oe上升到46.8 Oe。同时，LiZn-CTO复合材料具有较高的介电常数(ε′max=31.2)和磁导率(μ′max=20.6)，可用于电磁干扰滤波器和天线等LTCC集成器件。

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2016 17th International Conference on Electronic Packaging Technology (ICEPT)

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