Sökning: "Ordering"

Visar resultat 11 - 15 av 339 avhandlingar innehållade ordet Ordering.

  1. 11. Magnetic ordering and crystal structure in selected transition- metal compounds

    Författare :Hui-Ping Liu; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; transition-metal compounds; magnetic ordering; crystal structure; magneticstructure; neutron diffraction; Kemi; Chemistry; Kemi; Inorganic Chemistry; oorganisk kemi;

    Sammanfattning : Applications of magnetic materials are inherently related to their crystal, magnetic and electronic structures. In this thesis, experimental and theoretical methods have been focused on magnetic bulk materials from novel chemical synthesis, to X-ray diffraction for initial phase characterisation, and crystal and magnetic structure studies to explain their complex magnetic properties. LÄS MER

  3. 12. Ett fett liv : En artikulering av viktordningen på bas av överviktiga människors erfarenheter

    Författare :Aimée Ekman; Bengt Richt; Gunilla Tegern; Eklina Oinas; Linköpings universitet; []
    Nyckelord :The weight order; ordering; form; action perspective; grounded theory; fat studies; critical perspective; fatness; overweight; body weight; experience; Viktordningen; ordnande; form; handlingsperspektiv; grounded theory; fat studies; kritisk fetma forskning; fetma; övervikt; kroppsvikt; erfarenhet;

    Sammanfattning : Syftet med den här avhandlingen är att utveckla en begreppslig och teoretiserande förståelse för villkor och möjligheter i överviktiga personers handlingsliv. Med utgångspunkt i intervjuer med femton feta svenskar har slutpunkten för studien kommit att bli en artikulering av processer och subprocesser inom viktordningen. LÄS MER

  4. 13. Magnetic Ordering in Layered Magnets

    Författare :Moreno Marcellini; Björgvin Hjörvarsson; Roger C.C Ward; Uppsala universitet; []
    Nyckelord :Physics; Magnetic thin films and superlattices; Magnetic phase transitions; Polarized neutron reflectometry; Fysik;

    Sammanfattning : The preparation of layered magnets needs the knowledge of growth techniques which are focused on the growth of Fe/V(001) superlattices. Such films have been structurally investigated by X-rays reflectivity and diffraction. LÄS MER

  5. 14. Beyond average crystal structures: understanding extended and local environments in proton-conducting Sc-substituted BaTiO3 perovskites

    Författare :Nico Torino; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; proton conducting oxide; IR; thermogravimetry; perovskite; neutron scattering; Raman; Reverse Monte Carlo; ordering; BaTiO3;

    Sammanfattning : Proton conducting ceramics are very promising for applications concerned with energy sourcing with cleaner, safer, more abundant and cheaper alternatives to fossil fuels. These materials are still in development and advances in the field depend on a better understanding of the role of defects, their identification and location in the host framework, and the assessment of their short- and long-range dynamics and kinetics. LÄS MER

  7. 15. Scanning Tunneling Microscopy Induced Luminescence Studies of Semiconductor Nanostructures

    Författare :Ulf Håkanson; Fasta tillståndets fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; transmission electron microscopy TEM ; III-V semiconductors; low-dimensional structures; nanostructures; single dot spectroscopy; Stranski-Krastanow; quantum dot QD ; Semiconductory physics; polarization; ordering; InP; GaInP; photon mapping; scanning tunneling microscopy STM ; scanning tunneling luminescence STL ; Halvledarfysik; Fysicumarkivet A:2003:Håkanson;

    Sammanfattning : This thesis treats scanning tunneling luminescence (STL) investigations of semiconductor nanostructures. The STL technique combines scanning tunneling microscopy (STM) with detection of photons, induced by the tunneling electrons. The high spatial resolution in STM and the local excitation allow for optical investigations on the nanometer-scale. LÄS MER