Sökning: "extended X-ray absorption fine structure"

Visar resultat 1 - 5 av 19 avhandlingar innehållade orden extended X-ray absorption fine structure.

  1. 1. X-ray Absorption Spectroscopy on Nano-Magnet Arrays and Thin Films : Magnetism and Structure

    Författare :Andreas Persson; Dimitri Arvanitis; Cormac McGuinness; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; self organization; nano-magnet; xmcd; exafs; peem; magnetism; Surfaces and interfaces; Ytor och mellanytor; Magnetism; Magnetism; Materiefysik; Physics of Matter;

    Sammanfattning : The magnetic and structural properties of nano magnet arrays and ferromagnetic thin films are investigated. Circular x-rays are used and extensive use is made in this Thesis of the X-ray Magnetic Circular Dichroism (XMCD) technique. By means of the XMCD magneto-optic sum rules the values of the orbital and spin moments are determined. LÄS MER

  3. 2. Structural studies of ba3-type cytochrome c oxidase using serial crystallography and X-ray absorption spectroscopy

    Författare :Doris Zoric; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ba3-type cytochrome c oxidase; structural biology; X-rays; serial X-ray crystallography; X-ray absorption spectroscopy; enzyme reaction dynamics;

    Sammanfattning : Cytochrome c oxidase (CcO) catalyses the reduction of molecular oxygen to water while the energy released in this process is used transport protons “up-hill” across an energy transducing biological membrane, creating a proton-motive force for ATP synthesis. Given its key role in energy transduction in organisms, proton pumping has been extensively studied across species. LÄS MER

  4. 3. Microstructural properties of some oxide thin films studied by X-ray diffraction and extended X-ray absorption fine structure

    Författare :Arturas Vailionis; KTH; []
    Nyckelord :;

    Sammanfattning : The microstructure of some high-temperature superconductorrelated oxide thin films was studied by X-ray Diffraction (XRD)and Extended X-ray Absorption Fine Structure (EXAFS)techniques. A general one-dimensional kinematic x-raydiffraction model was further developed to quantitativelyanalyze the structural properties of complex layered films. LÄS MER

  5. 4. Structure, Dynamics and Thermodynamics of Liquid Water : Insights from Molecular Simulations

    Författare :Kjartan Thor Wikfeldt; Lars G. M. Pettersson; Francesco Sciortino; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Liquid water; supercooled water; diffraction; structure modeling; molecular dynamics; x-ray spectroscopy; EXAFS; SAXS; Physics; Fysik; Theoretical Physics; teoretisk fysik;

    Sammanfattning : Water is a complex liquid with many unusual properties. Our understanding of its physical, chemical and biological properties is greatly advanced after a century of dedicated research but there are still many unresolved questions. LÄS MER

  7. 5. On the preparation and structure of O-sialons

    Författare :Jörgen Sjöberg; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; silicon oxynitride; Sialon; ammonia; crystal structure; nitridation; extended X-ray absorption fine structure; nuclear magnetic resonance; neutron diffraction;

    Sammanfattning : .... LÄS MER