Sökning: "Hard magnetic materials"

Visar resultat 6 - 10 av 10 uppsatser innehållade orden Hard magnetic materials.

  1. 6. Preparation of Materials for Deep Tissue Imaging with Slow Light

    Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Författare :Mengqiao di; [2018]
    Nyckelord :Ultrasound Optical Tomography; Deep Tissue Imaging; Monte Carlo Simulation; Spectral Hole Burning; Physics and Astronomy;

    Sammanfattning : Ultrasound Optical Tomography (UOT) is a proposed technique, which combines ultrasound imaging and optical imaging in a new way to detect, e.g. LÄS MER

  3. 7. Optimisation of measuring magneticproperties of micro-structuresusing the magneto-optic Kerr effect

    Kandidat-uppsats, Uppsala universitet/Materialfysik

    Författare :Måns Persson; Filip Lindh; [2016]
    Nyckelord :moke; magnetism; elektromagnetism;

    Sammanfattning : Magnetic storage means storage of data using magnetised medium and is widespreadover the world today, especially in hard disk drives. Using this kind of storagerequires knowledge about these materials. A way to study thin magnetic materials isto use MOKE(magneto optical Kerr effect). LÄS MER

  4. 8. Element-Specific Magnetization Dynamics Using T-MOKE at the HELIOS Laboratory

    Kandidat-uppsats, Uppsala universitet/Molekyl- och kondenserade materiens fysik

    Författare :Fredrik Stångberg Valgeborg; [2016]
    Nyckelord :magnetization dynamics; magnetization; demagnetization; magnetism; element-specific; element-specificity; T-MOKE; MOKE; pump-prob; time-resolved pump-probe; HHG; high-order harmonic generation; overtone generation; HELIOS; magnetiseringsdynamik; magnetisering; avmagnetisering; magnetism; grundämnesspecifik; grundämnesspecificitet; T-MOKE; MOKE; pump-prob; tidsupplöst pump-prob; HHG; övertonsgenerering; HELIOS;

    Sammanfattning : Magnetism is a familiar phenomenon, and is applied in a variety of devices, from simple ones, like compasses, to the more sophisticated magnetic hard disk drives. It is also known that the magnetization of a material can change, for example by heating or by exposure to an external magnetic field. LÄS MER

  5. 9. PROCESSUTVECKLING FÖR JÄRNBASERADE HÅRDMAGNETISKA PULVER UTAN SÄLLSYNTA JORDARTSMETALLER

    Master-uppsats, Lunds universitet/Materialteknik

    Författare :Per-Olof Andersson; [2014]
    Nyckelord :Crystalline metals; Magnetic materials; Hard magnetic materials; Electro-magnetic applications; Single crystalline powder; Powder metallurgy; Fe2B; FeB; Water atomization; Gas Water atomization; non-RE hard magnetic material.; Technology and Engineering;

    Sammanfattning : An experimental study was performed, aimed at finding a way to produce single crystalline powder of pure (Fe0.7Co0.3)2B with a particle size of 100-200nm. This was done with the ultimate goal of producing a hard magnetic ferrite powder for powder metallurgical production of permanent magnets. LÄS MER

  7. 10. Design och konstruktion av mätuppställning för induktiv mätning av magnetisk spinndynamik

    Uppsats för yrkesexamina på avancerad nivå, Fasta tillståndets fysik

    Författare :Ville Törnman; [2010]
    Nyckelord :magnetisk spinndynamik; Kittel; Gilbert;

    Sammanfattning : Development in spin dynamic occurs in the whole world because of therising demands on fast electronic storage for example hard drivesand RAM (Random Access Memory). Measuring the spin resonance of amaterial gives you the insight of the theoretical speed for amagnetic memory. This means the maximum storage speed is below thefirst resonance. LÄS MER