Modeling the Permittivity of Ferrite-Dielectric Composites
| Authors | V.A. Astakhov , R.I. Shakirzyanov , A.T. Morchenko , Z.V. Mingazheva, S.P. Kurochka |
| Affiliations | National University of Science and Technology, MISiS 4, Leninskiy prosp., 119991 Moscow, Russia |
| Е-mail | west917@mail.ru |
| Issue | Volume 8, Year 2016, Number 3 |
| Dates | Received 04 May 2016; published online 03 October 2016 |
| Citation | V.A. Astakhov, R.I. Shakirzyanov, A.T. Morchenko, et al., J. Nano- Electron. Phys. 8 No 3, 03044 (2016) |
| DOI | 10.21272/jnep.8(3).03044 |
| PACS Number(s) | 41.20, 75.40.Gb, 75.471.x, 77.22, 84.40. – x |
| Keywords | Electromagnetic radiation (4) , Effective medium approximation (2) , Reflection coefficient (3) , Effective Permeability and Permittivity (2) , Shielding Materials, Ferrite (18) , Composite (45) . |
| Annotation | The paper presents the model of ferrite-dielectric (ferroelectric) composites with semiconductive powder fillers. Such media have the potential for designing systems with controlled frequency dispersion. Experimentally observed significant increase of effective dielectric permittivity in Mn-Zn ferrite composites with the semiconductor pellet is explained on the basis of the capacitance effect. Composites based on Ni-Zn ferrite, which have significantly higher electrical resistance, do not exhibit such phenomena and their behavior is described in the framework of the traditional models of effective medium approximation. There is proposed an analytical solution for the dielectric constant of the composite, based on consideration of the impedances of equivalent circuit involving initial materials (matrix and filler). |
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List of References |
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