Effect of Indirect Exchange Interaction on Ferromagnetic Resonance in Magnetic Nanogranular Films
| Authors | Yu.I. Dzhezherya , A.F. Kravets , I.M. Kozak , E.V. Shypil, A.M. Pogorily |
| Affiliations | Institute of magnetism, National Academy of Sciences of Ukraine, 36-b, Vernadsky Pr., 03142 Kyiv, Ukraine |
| Е-mail | irinkm@ukr.net |
| Issue | Volume 5, Year 2013, Number 4 |
| Dates | Received 22 November 2013; published online 31 January 2014 |
| Citation | Yu.I. Dzhezherya, A.F. Kravets, I.M. Kozak, et al., J. Nano- Electron. Phys. 5 No 4, 04075 (2013) |
| DOI | |
| PACS Number(s) | 76.50. + g, 76.20. + q, 75.75. + a, 71.70.Gm, 61.46. – w, 45.70. – n |
| Keywords | Nanogranular films, Magnetic granule, Ferromagnetic resonance, Exchange coupling, Structural percolation. |
| Annotation | The effect of the non-magnetic matrix conducting properties on the ferromagnetic resonance of the ensembles of ferromagnetic metal nanogranules in magnetic nanogranular films with different types of non-magnetic matrix (metal and dielectric) was investigated. Complex investigations of the behavior of nano-granular systems in ferromagnetic resonance showed that in materials with conducting matrix the evidence of ferromagnetic ordering occurs well before the structural percolation threshold. The experimental results are explained in terms of the phenomenological approach based on the consideration of the exchange bias of the conduction electron by magnetic ions of the nanogranules. It is shown that the polarization in the subsystem of the conduction electrons contributes to the appearance of the exchange interaction between the magnetic moments of the granules. |
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List of References |
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