Negative Refractive Index Ferromagnetic Materials with Negative Permeability at Zero Applied Magnetic Field |
| |
| Authors: | E Demirel M Ozdemir and B Aktas |
| |
| Institution: | (1) Department of Physics, Gebze Institute of Technology, Cayirova-Gebze, Kocaeli, Turkey;(2) TUBITAK-UEKAE, Gebze, Kocaeli, Turkey;(3) Department of Physics, Faculty of Sciences and Letters, Marmara University, Goztepe, Istanbul, Turkey; |
| |
| Abstract: | Negative magnetic permeability of ferromagnetic materials is studied in the microwave frequency region. The magnetic permeability
is analyzed by employing the dynamic equation of motion of magnetization for different directions of the applied magnetic
field with respect to crystalline axes. In the calculations, a very thin ferromagnetic layer with the cubic magneto-crystalline
anisotropy energy is considered. It is found that there can be multiple regions of the field value in which the real component
of the dynamic permeability becomes negative. In addition, the low-field region for negative permeability can be extended
even to the zero external static magnetic field. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
