Sökning: "Fysik magnetism"

Visar resultat 1 - 5 av 23 uppsatser innehållade orden Fysik magnetism.

  1. 1. Comparing Quantum and Semi-Classical Approaches to Non-Collinear Magnetism in an Electron-Spin Dimer

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Matematisk fysik

    Författare :Sherwan Jamo Abdi; [2023]
    Nyckelord :Skyrmion Electron Spin Dzyaloshinskii-Moriya Interaction DMI Ehrenfest Semiclassical; Physics and Astronomy;

    Sammanfattning : In this bachelor thesis, an explorative theoretical analysis is presented on a model system characterized by various and competing magnetic interactions. The system comprises two localized magnetic moments (spins), and a single itinerant electron that hops between two orbitals located at the spins’ positions. LÄS MER

  3. 2. Adaption of Inertial Confinement Fusion Resultsto Spherical Plasma Expansion at Comets

    Master-uppsats, Uppsala universitet/Institutionen för fysik och astronomi; Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen

    Författare :Viktor Sparrman; [2022]
    Nyckelord :Plasma; Inertial confinement fusion; comet; plasma expansion; Vlasov-Poisson; integral invariants; ergodicity;

    Sammanfattning : Recent missions to solar system comets, such as ESA's Rosetta mission, raise interest for models and descriptions of their plasma environment. The interaction with various space phenomena such as stellar wind make the construction of an analytical description difficult. LÄS MER

  4. 3. Quantum Landau-Lifshitz-Gilbert Dynamics of a Dimer

    Master-uppsats, Uppsala universitet/Teoretisk fysik; Uppsala universitet/Materialteori

    Författare :Lee Johnson; [2022]
    Nyckelord :;

    Sammanfattning : The classical Landau-Lifshitz-Gilbert (LLG) equations are of crucialimportance in micro-magnetism, but a true quantum-mechanical descriptionwas not found until 2013. However, very few realistic quantumsystems have been modeled using it. LÄS MER

  5. 4. Pedagogers uppfattningar om fysikundervisning i förskolan : En enkätstudie om hur pedagoger i en medelstor kommun i Mellansverige undervisar i ämnet fysik

    Uppsats för yrkesexamina på grundnivå, Karlstads universitet

    Författare :Emelie Amcoff; Valdete Sejdiu Seferi; [2022]
    Nyckelord :Physic education in preschool; physics in the preschool curriculum; physical phenomena; prerequisites for physics education; the competence of educators.; Fysikundervisning i förskolan; fysik i förskolans läroplan; fysikaliska fenomen; förutsättningar för fysikundervisning; pedagogers kompetens;

    Sammanfattning : The purpose of this study is to investigate how educators in preschool view teaching physics and how it is carried out together with the children. To find out about this, the study has been conducted with help of digital questionnaires where all educators in a medium-sized municipality in central Sweden have been given the opportunity to answer. LÄS MER

  7. 5. Modelling Magnetism of hcp Iron under Earth’s Inner Core Conditions : Based on first-principle DFT calculations and Machine Learning

    Master-uppsats, Linköpings universitet/Teoretisk Fysik

    Författare :Linda Le; [2022]
    Nyckelord :Machine learning; Earth’s Inner Core; hcp Iron; Electronic structure magnetism; Density functional Theory; Local magnetic moments; Ab initio molecular dynamics; ASD-AIMD-MLLSF simulation;

    Sammanfattning : The structure of Earth’s core remains largely a mystery. The solid inner core is believed to exist in extreme pressure and temperature conditions comparable to 300 GPa and 6000 K and consists mainly of iron, Fe. LÄS MER