Complex Magnetic Structure of Strongly Coupled Fe/Si Multilayers |
| J. Dubowika, F. Stobieckia, B. Szymańskia, Yu.V. Kudryavtsevb, A. Grabiasc and M. Kopcewiczc a Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland b Institute of Metal Physics, National Academy of Sciences of Ukraine Kiev-142, Ukraine cInstitute of Electronic Materials Technology, Wólczyńska 133, 01-919 Warsaw, Poland |
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| Fe/Si multilayers with strong bilinear and biquadratic couplings were investigated. A complex structure revealed by the Mössbauer spectroscopy corresponds to multimode ferromagnetic resonance spectra in a non-saturated state. Simple dispersion relations for antiferromagnetic coupled bilayer structures are shown to be inapplicable to the Fe/Si multilayers with a strong biquadratic component to the antiferromagnetic bilinear coupling. |
| DOI: 10.12693/APhysPolA.97.451 PACS numbers: 75.70.-i, 68.55.-a, 76.50.+g |