Search for dissertations about: "Magnetism"

Showing result 1 - 5 of 139 swedish dissertations containing the word Magnetism.

  1. 1. X-ray Absorption Spectroscopy on Nano-Magnet Arrays and Thin Films Magnetism and Structure

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Andreas Persson; Uppsala universitet.; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; self organization; nano-magnet; xmcd; exafs; peem; magnetism; NATURAL SCIENCES Physics Condensed matter physics Surfaces and interfaces; NATURVETENSKAP Fysik Kondenserade materiens fysik Ytor och mellanytor; NATURAL SCIENCES Physics Condensed matter physics Magnetism; NATURVETENSKAP Fysik Kondenserade materiens fysik Magnetism; Materiefysik; Physics of Matter;

    Abstract : The magnetic and structural properties of nano magnet arrays and ferromagnetic thin films are investigated. Circular x-rays are used and extensive use is made in this Thesis of the X-ray Magnetic Circular Dichroism (XMCD) technique. By means of the XMCD magneto-optic sum rules the values of the orbital and spin moments are determined. READ MORE

  2. 2. New Materials for Spintronics Electronic structure and magnetism

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Ronny Knut; Uppsala universitet.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Spintronics; X-ray photoemission; XPS; XMCD; XAS; magnetic semiconductors; HIKE; HAXPES; multilayer; monte carlo; magnetism; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

    Abstract : Materials exhibiting new functionalities due to interdependent electric (e.g. conductivity) and magnetic properties are potentially interesting for spintronics applications. READ MORE

  3. 3. Magnetism and Structure in Metallic Multilayers

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Erik Holmström; Uppsala universitet.; [2003]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; Magnetism; Interfaces; Structure; KKR-ASA; CPA; Quantum Well; Fysik; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Abstract : The interplay between magnetism and structure has been studied in magnetic multilayers by electronic structure calculations based on density functional theory and analyzed in terms of models. The main ideas behind the Korringa-Kohn-Rostocker Green’s function method are described and the implementation of the coherent potential approximation is outlined. READ MORE

  4. 4. Trends in Magnetism From Strong Correlations to “-onics” Technology

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Dmitry Yudin; Uppsala universitet.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Strongly interacting electron systems; Spin dynamics; Topological matter; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

    Abstract : Despite of enormous progress in experimental nanophysics theoretical studies of low-dimensional electron systems still remains a challenging task. Indeed, most of the structures are strongly correlated, so that an effective perturbative treatment is impossible due to the lack of a small parameter. READ MORE

  5. 5. A Theoretical Study of Magnetism in Nanostructured Materials

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Anders Bergman; Uppsala universitet.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; magnetism; clusters; non-collinear; multilayers; first-principles theory; electronic structure; high-moment materials; exchange interactions; linear scaling methods; Fysik;

    Abstract : A first-principles linear scaling real-space method for investigating non-collinear magnetic behaviour of nanostructured materials has been developed. With this method, the magnetic structures of small supported transition metal clusters have been examined. READ MORE