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Full-Text Articles in Physics
A Combined Heating Cooling Stage For Cluster Thermalization In The Gas Phase, D. N. Ievlev, A. Küster, Axel Enders, N. Malinowski, H. Schaber, Klaus Kern
A Combined Heating Cooling Stage For Cluster Thermalization In The Gas Phase, D. N. Ievlev, A. Küster, Axel Enders, N. Malinowski, H. Schaber, Klaus Kern
Axel Enders Publications
We report on the design and performance of a combined heating/cooling stage for the thermalization of clusters in a gas phase time-of-flight mass spectrometer. With this setup the cluster temperature can sensitively be adjusted within the range from 100 up to 800 K and higher. The unique combination of a heating stage with a subsequent cooling stage allows us to perform thermodynamic investigations on clusters at very high temperatures without quality losses in the spectra due to delayed fragmentation in the drift tube of the mass spectrometer. The performance of the setup is demonstrated by the example of (C60 …
Combined Kerr Microscope And Magnetic Force Microscope For Variable Temperature Ultrahigh Vacuum Investigations, D. Peterka, Axel Enders, G. Haas, Klaus Kern
Combined Kerr Microscope And Magnetic Force Microscope For Variable Temperature Ultrahigh Vacuum Investigations, D. Peterka, Axel Enders, G. Haas, Klaus Kern
Axel Enders Publications
A new system combining a Kerr microscope and a magnetic force microscope for the study of magnetic domains in ultrathin films under ultrahigh vacuum conditions is presented. Due to the overlapping imaging range of both techniques magnetic domains can be investigated over a lateral range from millimeter down to fractions of a micrometer. Experiments can be done at variable temperatures, from 80 K to 600 K. First results are presented showing the same magnetic domain in a three monolayer Fe film on Cu (100) imaged with both techniques.
Temperature Dependence Of The Surface Anisotropy Of Fe Ultrathin Films On Cu(001), Axel Enders, D. Peterka, D. Repetto, N. Lin, Ivan Dmitriev, Klaus Kern
Temperature Dependence Of The Surface Anisotropy Of Fe Ultrathin Films On Cu(001), Axel Enders, D. Peterka, D. Repetto, N. Lin, Ivan Dmitriev, Klaus Kern
Axel Enders Publications
We report an experimental approach to separate temperature dependent reversible and irreversible contributions to the perpendicular magnetic anisotropy of Fe films grown at low temperatures on Cu(001) substrates. The surface anisotropy KS(T) is found to decrease linearly with temperature, causing a thermally induced spin reorientation into the plane. The irreversible shift of the spin reorientation transition and the coercivity of the iron films are directly correlated to the increasing Fe island size during annealing. The increased coercivity is discussed in terms of domain wall energy inhomogeneities provided by the islands.