Sökning: "Neutron diffraction"

Visar resultat 11 - 15 av 129 avhandlingar innehållade orden Neutron diffraction.

  1. 11. Magnetic Materials for Cool Applications : Relations between Structure and Magnetism in Rare Earth Free Alloys

    Författare :Johan Cedervall; Martin Sahlberg; Paul Henry; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Magnetism; Diffraction; X-ray scattering; Neutron Scattering; Permanent magnets; Magnetocalorics; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

    Sammanfattning : New and more efficient magnetic materials for energy applications are a big necessity for sustainable future. Whether the application is energy conversion or refrigeration, materials based on sustainable elements should be used, which discards all rare earth elements. LÄS MER

  3. 12. The Role of Sugars for Protein Stabilization

    Författare :Christoffer Olsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; protein; water; QENS; biomolecule; EPSR; amorphous; trehalose; neutron scattering; cryopreservation; DSC; neutron diffraction; dielectric spectroscopy;

    Sammanfattning : The understanding of biomolecular interactions with water and co-solutes can lead to greater knowledge regarding the mechanisms behind biomolecular stabilization. This is highly important for developing technologies aimed to preserve biological materials. LÄS MER

  4. 13. Hydrogen Bonding in Liquid Alcohols

    Författare :Per Sillrén; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Hydrogen Bonded Liquids; Physics of liquids; Diffraction; Monte Carlo Simulation; Alcohols; Neutron Scattering; EPSR;

    Sammanfattning : Hydrogen bonded (H-bonded) materials, such as water, alcohols, sugars, and even DNA, are extremely important for biology, as well as chemical industry. Alcohols are used as solvents in paints, in perfumes, as cleaners, anti-freezers, or as an alternative to petrol in combustion engines. LÄS MER

  5. 14. Structural and Electrical Transport Properties of Doped Nd-123 Superconductors

    Författare :Shaban Reza Ghorbani; KTH; []
    Nyckelord :high temperature superconductors; critical temperature; resistivity; thermoelectric power; Hall coefficient; X-ray diffraction; Neutron diffraction; NdBa2Cu3O7-delta; hole concentration; substitution;

    Sammanfattning : It is generally believed that one of the key parameterscontrolling the normal state and superconducting properties ofhigh temperature superconductors is the charge carrierconcentrationpin the CuO2planes.By changing the non-isovalent dopingconcentration on the RE site as well as the oxygen content in(RE)Ba2Cu3O7−δ, an excellent tool is obtained tovary the hole concentration over a wide range from theunderdoped up to the overdoped regime. LÄS MER

  7. 15. A Structural Viewpoint of Magnetism in Fe and Co Based Superlattices

    Författare :Matts Björck; Gabriella Andersson; Adrian Rennie; Thomas Hase; Uppsala universitet; []
    Nyckelord :Physics; Magnetism; Multilayer; Superlattice; X-ray magnetic circular dichroism; X-ray diffraction; X-ray reflectivity; Neutron diffraction; Structural refinement; Interfaces; Fysik;

    Sammanfattning : In order to understand the properties of thin film devices, knowledge of the material's structure is essential. The work presented here combines magnetic and structural characterization of the systems studied to gain a deeper physical understanding. LÄS MER