Epitaxy, Thin films and Superlattices

Morten Jagd Christensen

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    Abstract

    This report contains the result of structural investigations of 3d transition metal superlattices consisting of Fe/V, Cr/Mn, V/Mn and Fe/Mn, and a structural and magnetic study of a series of Ho/Pr alloys. The work includes preparation and characterization of substrates as well as growth of thin films and Fe/V superlattices by molecular beam epitaxy, including in-situ characterization by reflection high energy electron diffraction and Auger electron spectroscopy. Structural characterization has been done by x-ray diffraction and neutron diffraction. The x-ray diffraction experiments have been performed at the rotating copper anode at Risø, and at synchrotron facilities in Hamburg and Brookhaven, and the neutron scattering was done at the Danish Research Reactor DR3 at Risø. In addition to longitudinal scans, giving information about the structural parameters in the modulation direction, non-specular scans were also performed. This type of scans gives information about in-plane orientation and structure. From the analysis, structural information about lattice parameters, epitaxial strain, coherence lengths and crystallographic orientation is obtained for the superlattice systems, except Fe/Mn superlattices, which could not be modelled. For the Ho/Pr alloys, x-ray magnetic scattering was performed, and the crystal and magnetic structures were investigated
    Original languageEnglish
    Place of PublicationRoskilde, Denmark
    Number of pages85
    ISBN (Print)87–550–2298–7
    Publication statusPublished - 1997
    SeriesDenmark. Forskningscenter Risoe. Risoe-R
    Number980(EN)
    ISSN0106-2840

    Keywords

    • Risø-R-980
    • Risø-R-980(EN)

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