Characterization of Ni–Zn Ferrite Double-Positive Metamaterials for Pulsed Power Systems
| Autor: | Aric M. Pearson, Kelli M. Noel, Randy D. Curry |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Permittivity Nuclear and High Energy Physics Materials science Dielectric strength business.industry Metamaterial 02 engineering and technology Dielectric 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electric field Rise time 0103 physical sciences Optoelectronics Ferrite (magnet) 0210 nano-technology business Microwave |
| Zdroj: | IEEE Transactions on Plasma Science. 44:1978-1983 |
| ISSN: | 1939-9375 0093-3813 |
| DOI: | 10.1109/tps.2016.2570682 |
| Popis: | A new type of metamaterial has been developed for the use in pulsed power systems. These materials have the applications in high-power microwave systems, dielectric-loaded components, and nonlinear transmission lines. We present a double-positive metamaterial created by incorporating several types of nickel–zinc ferrite powders into a silane binder. Measurements show these materials to possess positive relative permeability and permittivity values in the range of 3–6 for frequencies between 20 MHz and 2 GHz. The dielectric strengths of five different types of ferrite-based composites were measured to evaluate the potential of these materials for high-power applications. A pulse with a magnitude up to 100 kV and rise time on the order of tens of nanoseconds was used to determine the dielectric strength of disks with a diameter of 2.54 cm and a thickness of 0.2 cm. A maximum electric field of 163.79 kV/cm was sustained before breakdown. This paper presents a statistical analysis of the dielectric strength data and projects the power handling capabilities of the composites. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|