Novel magnetodielectric nanomaterials with matching permeability and permittivity for the very-high-frequency applications
Novel magnetodielectric nanomaterials with matching permeability and permittivity for the very-high-frequency applications
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DOI：
10.1016/j.scriptamat.2010.09.045
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发表时间：
2011
影响因子：
6
通讯作者：
A. Thakur;P. Thakur;J. Hsu
中科院分区：
文献类型：
--
作者：
A. Thakur;P. Thakur;J. Hsu
采用共沉淀法制备了Ni0.35Zn0.35Co0.2Mn0.05Cu0.05Fe1.98O4纳米铁氧体。在900°C下烧结后获得的材料显示出接近6的几乎匹配的磁导率和介电常数值，其中在10- 200 MHz范围内具有低的磁损耗角正切值（0.03）和介电损耗角正切值（0.008）。再加上折射率约为6，阻抗约为1，这种材料可以用于VHF波段小型化天线的负载。
Nanoferrites with a composition of Ni0.35Zn0.35Co0.2Mn0.05Cu0.05Fe1.98O4were synthesized by a co-precipitation method. The material obtained after sintering at 900°C shows almost matching permeability and permittivity values of close to 6 with low values for magnetic loss tangent (∼0.03) and dielectric loss tangent (∼0.008) in the range 10–200MHz. Together with a refractive index of about six and a reduced impedance of around one, this material could be employed for loading of miniaturized antennas in the VHF band.