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Exchange Coupling in Magnetic Multilayers Grown on Iron Whiskers



John Unguris, Robert Celotta, D Tulchinsky, Daniel T. Pierce


Meaningful tests of theoretical predictions of magnetic multilayer properties require the fabrication of multilayers with nearly the same atomic scale precision as the theoretical models. Multilayers grown epitaxially on single crystal Fe whisker substrates come very close to this ideal standard. We have investigated the growth, magnetic structure, and exchange coupling of Fe/(Ag, Au, Cr, Mn, V, Cu, or Al)/Fe(100) whisker structures primarily using Reflection High Energy Electron Diffraction (RHEED) and Scanning Electron Microscopy with Polarization Analysis (SEMPA), and in some systems, confocal Magneto-optic Kerr Effect (Moke) microscopy. In cases of nearly layer by layer growth, the measured oscillatory coupling periods and strengths agree well with theoretical predictions. For rougher growth, less predictable non-collinear coupling is generally observed.
Journal of Magnetism and Magnetic Materials


Cr spin density wave, interlayer exchange coupling, magnetic microstructure, magnetic multilayers, SEMPA


Unguris, J. , Celotta, R. , Tulchinsky, D. and Pierce, D. (1999), Exchange Coupling in Magnetic Multilayers Grown on Iron Whiskers, Journal of Magnetism and Magnetic Materials (Accessed July 22, 2024)


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Created August 19, 1999, Updated October 12, 2021