Sökning: "reflectivity"

Visar resultat 1 - 5 av 35 uppsatser innehållade ordet reflectivity.

  1. 1. Spatial and Temporal Variations in a Perennial Firn Aquifer on Lomonosovfonna, Svalbard

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper; Uppsala universitet/Institutionen för geovetenskaper

    Författare :Monika Hawrylak; Emma Nilsson; [2019]
    Nyckelord :perennial firn aquifer; ground penetrating radar; Svalbard; Lomonosovfonna; flerårig firnakvifer; georadar; Svalbard; Lomonosovfonna;

    Sammanfattning : A firn aquifer is a type of englacial water storage that forms when surface meltwater fills up the pore space in porous firn. If the retention time exceeds one year the feature is regarded as perennial. The melt and accumulation rates as well as the available pore space determine the formation and extent of the firn aquifer. LÄS MER

  2. 2. 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

  3. 3. Analysis of spatial-temporal pattern of Land Surface Temperature (LST) due to NDVI and elevation in Ilorin, Nigeria

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Elijah A Njoku; [2019]
    Nyckelord :GIS; LST; Vegetation cover; Ilorin; Elevation; Urban Heat Island; Earth and Environmental Sciences;

    Sammanfattning : The rate of global urbanization in the 21st century has been unprecedented especially in the African and the Asian continents. Urbanization typically causes a removal of natural vegetation and replacement of same with impervious and non-evaporative urban materials with high heat capacity and low solar reflectivity. LÄS MER

  4. 4. 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

  5. 5. Tailoring the Magnetic Properties of Amorphous TbCo Nano Films

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Materialfysik

    Författare :Viktor Djurberg; [2018]
    Nyckelord :Magnetic properties; Amorphous TbCo film; Magnetic Anisotropy; Interface effects;

    Sammanfattning : The possibility to change magnetic anisotropy of amorphous TbCo films from out-of-plane to in-plane has been investigated. The effects of TbCo film's thickness and composition on the magnetic anisotropy were investigated together with the effects of growing the TbCo films on a SmCo seed layer. LÄS MER