Sökning: "XRR"

Visar resultat 1 - 5 av 8 uppsatser innehållade ordet XRR.

  1. 1. Investigation of magnetic order in nickel-5d transition metal systems

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

    Författare :Konstantinos Papadopoulos; [2019]
    Nyckelord :muSR; muons; skyrmions; magnetism; transition; spin; rotation; relaxation; resonance; thin; films; transition; metals; MBE; sputtering; XRR; reflectivity; molecular; beam; epitaxy; x; ray; TRIUMF; double; perovskite; longitudinal; transverse; nickel; Ni; asymmetry; positron; depolarization; chiral; lattice; helical; DM; interaction;

    Sammanfattning : Double perovskite materials exhibit alterations in magnetic order through manipulation oftheir crystal structure. Certain ultra thin metallic bilayers can create an exotic magnetic stateof confined spin textures called skyrmions. In both cases, new atomic arrangements leadto new electrical and magnetic properties. LÄS MER

  2. 2. Growth and Characterization of CrB2/TiB2 Superlattices by Magnetron Sputtering

    Master-uppsats, Linköpings universitet/TunnfilmsfysikLinköpings universitet/Tekniska fakulteten

    Författare :Samira Dorri; [2019]
    Nyckelord :Thin films; diborides; superlattices; reflectivity; transition-metal diborides; CrB2; TiB2;

    Sammanfattning : In the present work, growth and structural characterization of CrB2/TiB2 superlattices on (0001) Al2O3 substrate is studied. The superlattices are grown using a direct current magnetron sputtering (DCMS) system with a base pressure of <9E-7 Torr. LÄS MER

  3. 3. Finite-size effect in CoAlZr/AlZr multilayers

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Materialfysik

    Författare :Fredrik Backer-Meurke; [2018]
    Nyckelord :Magnetism; thin film; Co; AlZr; Magnetic materials;

    Sammanfattning : The structural and magnetic properties of amorphous Cox(Al80Zr20)1-x multilayers with varying thicknesses of the magnetic bilayers have been investigated. The reduction of the thickness causes a reduction of the critical temperature, Tc, this is known as the finite-size effect. LÄS MER

  4. 4. Ferroelectricity in nanocrystalline Hf0.5Zr0.5O2 thin films

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Författare :Lun Sang; [2018]
    Nyckelord :ferroelectricity; Hf0.5Zr0.5O2; GIXRD; XRR; Technology and Engineering; Physics and Astronomy;

    Sammanfattning : Hafnium dioxide (HfO_2) based thin films doped with various dopants (Si, Ge, Al, Gd, Sr, Zr) have been found to exhibit ferroelectricity. These dopants were found to stabilize the III orthorhombic phase in the hafnium oxide based thin films. LÄS MER

  5. 5. Structural Investigations of HiPIMS-deposited Diamond-Like Carbon Thin Films using Raman Spectroscopy

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Fasta tillståndets elektronik

    Författare :Andreas Eriksen Tell; [2017]
    Nyckelord :;

    Sammanfattning : Diamond-like carbon (DLC) is a versatile material which exhibits excellentmechanical, electrical and optical properties making it suitable for applications rangingfrom biomedical implants to engine components. The properties of DLC thin films aredetermined by the bonding configuration (sp3/sp2 fraction) of its carbon atoms. LÄS MER