Complex Permittivity and Permeability Spectra of Nickel/Polyphenylene Sulfide Composite in Radio Frequency Range
| Autor: | Runhua Fan, Chuan Xin Hou, Zhong Yang Wang, Jian Chun Ji, Pei Tao Xie, Guo Hua Fan, Min Chen |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
chemistry.chemical_classification Permittivity Materials science Sulfide Mechanical Engineering Composite number Inorganic chemistry Relative permittivity chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Spectral line Nickel chemistry Mechanics of Materials Permeability (electromagnetism) 0103 physical sciences General Materials Science Radio frequency Composite material 0210 nano-technology |
| Zdroj: | Materials Science Forum. 898:1757-1763 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.898.1757 |
| Popis: | Due to the distinct electromagnetic properties, double negative materials have bright application prospect in many areas in the future. The nickel (Ni)/polyphenylene sulfide (PPS) composites were prepared by hot pressing Ni and PPS powders mixture. Microstructures, dielectric properties, and magnetic performances of the resulted composites were studied in detail. Once Ni contents exceeded the percolation threshold, the conductive networks would form and the conduction mechanism would change from hopping conduction to metal-like conduction. Due to the plasma oscillation of the free electrons within the conductive networks, negative permittivity appeared. Interestingly, circuit loops in the connected Ni particles induced by external electric field resulted in a diamagnetic phenomenon under high frequency for the composite with ferromagnetic Ni particles. |
| Databáze: | OpenAIRE |
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