Study of DC conductivity and relative magnetic permeability of nanoparticle NiZnFe2O4/PPy composites |
| |
Authors: | SA Saafan TM MeazEH El-Ghazzawy |
| |
Institution: | Physics Department, Faculty of Science, Tanta University, Tanta, Egypt |
| |
Abstract: | The DC conductivity and the relative magnetic permeability have been measured as functions of temperature for five powder samples of nanoparticle ferrites (NixZn1−xFe2O4; x=0, 0.25, 0.5, 0.75 and 1), a pure polypyrrole (PPy) powder sample and many composite samples prepared by mixing different ratios of the ferrites to PPy. By comparing the results it is found that there is an obvious increase in DC conductivity of the ferrite/PPy composite samples compared to the corresponding pure ferrite samples, whereas compared to the pure PPy sample there is a decrease in DC conductivity. On the contrary, the magnetic permeability of the composites is higher than that of the pure PPy sample and lower than that of the pure ferrite samples as was expected. |
| |
Keywords: | Nanoparticle ferrites Ferrite/polymer composites DC conductivity Magnetic permeability |
本文献已被 ScienceDirect 等数据库收录! |
|