Search for dissertations about: "chemical ordering"
Showing result 1 - 5 of 93 swedish dissertations containing the words chemical ordering.
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1. Structure and chemical ordering in metallic nanoparticles from atomic scale modeling
Abstract : In the last decades, a wide range of attractive properties have put metallic nanoparticles in the spotlight. These properties, often related to optical response and catalytic performance, are to a large extent dependent on structure and chemical ordering, that is, the distribution of elements in the nanoparticle. READ MORE
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2. Ordering of atoms and vacancies in cubic gamma brasses
Abstract : The article reviews crystal structure investigations of some binary cubic gamma brasses. The normal l-centered and primitive gamma brass structures as well as 2 x 2 x 2 cubic superstructures with both F- and l-centered unit cells are described. READ MORE
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3. Magnetic ordering and crystal structure in selected transition- metal compounds
Abstract : 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. READ MORE
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4. Modelling Chemical Reactions : Theoretical Investigations of Organic Rearrangement Reactions
Abstract : Chemical reactions are ubiquitous and very important for life and many other processes taking place on earth. In both theoretical and experimental studies of reactivity a transition state is often used to rationalise the outcome of such studies. READ MORE
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5. Beyond average crystal structures: understanding extended and local environments in proton-conducting Sc-substituted BaTiO3 perovskites
Abstract : 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. READ MORE
