Magnetic and dielectric properties of Ni0.8Zn0.2Fe2O4/HDPE composites for high-frequency application |
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Authors: | Haibo Yang Ying Lin Jianfeng Zhu Fen Wang Hongjie Luo |
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Affiliation: | (1) School of Materials Science and Technology, Shaanxi University of Science and Technology, Xi’an, 710021, China;(2) Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China |
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Abstract: | A low loss high-frequency magnetic composite with Ni0.8Zn0.2Fe2O4 (NZO) ultrafine particles embedded in a high density polyethylene (HDPE) matrix was fabricated by using a simple low-temperature
hot-pressing technique. The magnetic and dielectric properties of the as-prepared composites were investigated in details.
The results indicate that as the volume of the ceramic fillers increase, the permittivity, permeability, dielectric and magnetic
loss of the composite all increase. The cut-off frequencies of the composites are all above 1 GHz. Because of the low resistivity
of NZO, the dielectric losses of the composites are big and decrease with frequency below 100 MHz. Good frequency stabilities
of the permittivities and permeabilities, and low dielectric and magnetic losses within the measurement range have been observed.
For the composite containing 30 vol% NZO, the permittivity, dielectric loss, permeability and magnetic loss are 3.7, 0.0025,
2.2 and 0.002 at 100 MHz, respectively. |
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Keywords: | |
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