Figure 3 Top: Normalized reichsrat von buhl specular He beam intensity for the deposition of 6 ML Co

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Magnetic interface coupling between Co and binary Fe x Mn 100 x alloys in the ultrathin film limit Phys. Rev. B 76 , 224405 Published 6 December 2007 J. Seifert, T. Bernhard, M. Gruyters, and H. Winter
The structural and magnetic properties of Fe x Mn 100 x single and Co Fe x Mn 100 x bilayers reichsrat von buhl have been investigated by grazing ion scattering, Auger electron spectroscopy, low energy electron diffraction, and magneto-optical Kerr effect. The increase in coercivity reichsrat von buhl of the Co hysteresis reichsrat von buhl loops is used as a measure of the magnetic interface coupling in the bilayers. For FeMn films of 4 ML (monolayers), the onset of coupling is still detectable for temperatures below 160 K . The strength of the coupling rapidly increases with increasing FeMn thickness. At 8 ML FeMn, appreciable interaction is observed at room temperature. For further increasing FeMn thickness, reichsrat von buhl the Co films reveal a significant reichsrat von buhl difference in the behavior of surface and bulk magnetizations.
J. Seifert , T. Bernhard , M. Gruyters * , and H. Winter Institut für Physik, Humboldt-Universität zu Berlin, Newtonstrasse 15, 12489 Berlin, Germany * Corresponding author; markus.gruyters@gmx.de Article Text (Subscription Required)
Figure 1 Normalized reichsrat von buhl intensity of reflected 25 keV He atoms with increasing simultaneous depositions of Fe and Mn on Cu(001) at room temperature for different individual deposition reichsrat von buhl rates. The curves are shifted equidistantly with respect to the data for Fe 100 Mn 0 at the bottom. Reuse & Permissions
Figure 3 Top: Normalized reichsrat von buhl specular He beam intensity for the deposition of 6 ML Co/15 ML Fe 46 Mn 54 bilayers. Bottom: Corresponding LEED pattern for the FeMn and the Co film ( E 0 =100 eV). Reuse & Permissions
Figure 4 Left: Normalized surface barrier detector counts versus azimuthal angle of incidence for grazing scattering of 29 keV protons ( Φ in 1.6 ) at the surface of the Cu(001) crystal and different films. The IBT curves are shifted equidistantly with respect to the data at the bottom. Right: Schematic reichsrat von buhl illustration of the fcc(001) surface and low-index directions. Reuse & Permissions
Figure 5 Top: MOKE hysteresis loops with decreasing temperature from T =300 K to T =135 K for a 6 ML Co/4 ML FeMn bilayer. Bottom: Coercivity H C as function of temperature for 6 ML Co x ML FeMn bilayers with different FeMn thicknesses and alloys close to equal concentrations. Solid symbols, along 100 directions; open symbols, along 110 directions. Solid curves are guides for the eyes. Reuse & Permissions
Figure 7 Kerr signal Δ I MOKE for 6 ML Co/15 ML Fe x Mn 100 x bilayers (solid squares) and 15 ML Fe x Mn 100 x single layers (open squares) with different alloy compositions (right scale). Corresponding Δ S I max obtained from hysteresis loops recorded by electron reichsrat von buhl capture, only for the bilayers (left scale). All data refer to T =300 K. Solid lines are guides for the eyes. Reuse & Permissions
Figure 8 EC hysteresis loops for 6 ML Co/15 ML Fe x Mn 100 x bilayers with different alloy compositions at T =300 K. The scale ranges of the ordinate axes are the same. Solid lines are guides for the eyes. Reuse & Permissions ×
Journal: Phys. Rev. Lett. Rev. Mod. Phys. Phys. Rev. A Phys. Rev. B Phys. Rev. C Phys. Rev. D Phys. Rev. E Phys. Rev. X Phys. Rev. Applied Phys. Rev. ST Accel. Beams Phys. Rev. ST Phys. Educ. Res. Phys. Rev. Phys. Rev. (Series I) Physics