Sökning: "K T transition"

Visar resultat 1 - 5 av 50 avhandlingar innehållade orden K T transition.

  1. 1. Synthesis and characterization of magnetic nanolaminated carbides

    Författare :Andrejs Petruhins; Johanna Rosén; Per O. Å. Persson; Niklas K. Hellgren; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : MAX phases are a group of nanolaminated ternary carbides and nitrides, with a composition expressed by the general formula Mn+1AXn (? = 1 − 3), where M is a transition metal, A is an A-group element, and X is carbon and/or nitrogen. MAX phases have attracted interest due to their unique combination of metallic and ceramic properties, related to their inherently laminated structure of a transition metal carbide (Mn+1Xn) layer interleaved by an A-group metal layer. LÄS MER

  3. 2. Final-State-Resolved Mutual Neutralization of Li+ and H-

    Författare :Alice F. Schmidt-May; Henning T. Schmidt; Fivos Perakis; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; DESIREE; ion; mutual neutralization; collision; lithium; hydrogen; Physics; fysik;

    Sammanfattning : We studied the mutual neutralization of Li+ and H- at effective collision energies of a few hundred meV, which corresponds to temperatures of around 2000 K, in the double ion storage ring DESIREE.We present a new approach to match beam velocities and a new general analysis method for non-fragmenting mutual neutralization at DESIREE. LÄS MER

  4. 3. Controlled Polymer Grafting from Nanoparticles for the Design of Dielectric Nanocomposites

    Författare :Martin Wåhlander; Eva Malmström; Anna Carlmark; Henrik Hillborg; Sanat K. Kumar; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : The interest for polymeric nanocomposites has rapidly grown during the last decades, fuelled by the great potential and superior properties of nanoparticles (NPs). The production volumes of commercial NPs have increased exponentially during the last ten years, and the quality has been significantly improved. LÄS MER

  5. 4. Generations in motion : The transition in Hungary and the democratic change of regime, 1987-94

    Författare :Annika Eliasson; Sociologi; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Sociology; political change; political sociology; Historical sociology; Hungary; change of regime; generations; transition; Sociologi;

    Sammanfattning : This dissertation explains the transition - the change of political system from a one-party state to a multi-party system - in Hungary as the result of a generation change, where different generations with different historical experiences either lost or gained political capital. It also includes a review of what consequences the changes in the political field had for the intellectual and economic fields. LÄS MER

  7. 5. Photo-induced Structural Dynamics in Transition Metal Dichalcogenides

    Författare :Shaozheng Ji; Jonas Weissenrieder; James Gardner; Oscar Tjernberg; Fabrizio Carbone; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ultrafast electron microscope; coherent shear phonon; photo-induced phase transition; 1T-TaSe2; Td-WTe2; charge density wave; ultrasnabbt elektronmikroskop; koherent skjuvphonon; fotoinducerad fasövergång; 1T-TaSe2; Td-WTe2; laddningsdensitetsvåg; Material and Nano Physics; Material- och nanofysik;

    Sammanfattning : Ultrafast electron microscope (UEM), a combination of transmission electron microscopy and laser-based pump-probe techniques, facilitates ultrafast imaging, diffraction, and electron-spectroscopy with high spatial resolution. The unique advantages of UEM enable local ultrafast dynamic studies in materials, nano-system, and biology. LÄS MER