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Descripción
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| Abstract: Ferromagnetic resonance (FMR) is used to probe the magnetic properties of Co/Ag superlattices (SLs) with ultrathin Co layers (2-6 angstrom). Different series of 5x[Ag/Co] multilayers have been grown by molecular beam epitaxy on Si(111) substrates, monitoring the growth by reflection high energy electron diffraction. Cross-section transmission electron microscopy confirms the growth of local areas with the designed SL periodicity, a sharp compositional modulation, well defined Ag-Co interfaces, and a perfect fcc (111) stacking. FMR spectra have been recorded at various polar angles in the 0 degrees-90 degrees range. A single and extremely broad resonance peak is observed in all cases. While SLs with Ag layers thinner than 10 angstrom exhibit similar values of the perpendicular anisotropy, a clear reduction is observed for samples with Ag layers about 14 angstrom thick. Possible causes for this change are discussed. (c) 2008 American Institute of Physics. | |
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Internacional
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Si |
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JCR del ISI
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Si |
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Título de la revista
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JOURNAL OF APPLIED PHYSICS |
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ISSN
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0021-8979 |
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Factor de impacto JCR
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2,171 |
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Información de impacto
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Volumen
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103 |
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DOI
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10.1063/1.2839287 |
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Número de revista
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7 |
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Desde la página
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07B527 |
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Mes
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ENERO |
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Ranking
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