Search for dissertations about: "magnetic phenomena"

Showing result 1 - 5 of 112 swedish dissertations containing the words magnetic phenomena.

  1. 1. Critical Phenomena and Exchange Coupling in Magnetic Heterostructures

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Martina Ahlberg; Uppsala universitet.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; phase transitions; critical behavior; 2D XY model; MOKE; magnetic thin films and superlattices; amorphous multilayers; magnetic proximity effects; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

    Abstract : The continuous phase transition in thin magnetic films and superlattices has been studied using the magneto-optical Kerr effect (MOKE) and polarized neutron scattering (PNR).  It has been shown that the critical behavior of amorphous thin films belonging to the 2D XY universality class can be described within the same theory as crystalline sample. READ MORE

  2. 2. Local magnetic susceptometry : Visualizing functional properties of novel materials

    University dissertation from Stockholm : KTH

    Author : Ziyan Gu; KTH.; [2005]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Materialvetenskap; TECHNOLOGY Materials science; TEKNIKVETENSKAP Teknisk materialvetenskap;

    Abstract : One of the rapidly growing instrumentation technologies of late has been Surface Probe Microscopy. Since the award of the Nobel Prize in 1986, this form of instrumentation has expanded into various fascinating forms and is successfully enabling investigations at a nano-scale. READ MORE

  3. 3. Relaxation phenomena in disordered magnetic systems : spin glasses

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Peter Svedlindh; Uppsala universitet.; [1985]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : .... READ MORE

  4. 4. Generation of magnetic fields on galactic scale

    University dissertation from Stockholm University

    Author : Fabio Del Sordo; Stockholms universitet.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Magnetic fields; galaxies; astronomi; Astronomy;

    Abstract : In these pages we will go through the topic of astrophysical magnetic fields, focusing on galactic fields, their observation and the theories that have been developed for a proper understanding of the these physical phenomena.We review the main work in the study of galactic magnetic fields, often seeing how it is important to deal with problems of general validity in order to be able to point out the right elements needed for a correct interpretation of specific situations. READ MORE

  5. 5. Nonlinear dynamics of strongly-bound magnetic vortex pairs

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Artem Bondarenko; KTH.; [2019]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; magnetic vortex; nonlinear mechanics; isolated resonance; nonlinear frequency tuning; chaotic dynamics; parametric interaction; Thiele equation; Monte Carlo simulations; Ito processes; bistability; tunneling magneto-resistance; Magnetisk-virvel; icke-linjär dynamik; isolerad resonans; icke-linjär frekvens-optimering; kaotisk dynamik; parametrisk interaktion; Thiele-ekvation; Monte Carlo-simuleringar; Ito-processer; bistabilitet; tunnelmagneto-resistans.; Physics; Fysik;

    Abstract : This work is a study of nonlinear phenomena in vertically stacked pairs of magnetic vortices. New dynamic regimes are uncovered with a decrease in the inter-vortex separation to below the lateral vortex-core size. READ MORE