Search for dissertations about: "Incommensurate structure"
Showing result 1 - 5 of 16 swedish dissertations containing the words Incommensurate structure.
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1. Structure-Magnetic Relationships in the Fe-Mn-P-Si System for Energy Applications
Abstract : Demands for new, energy-efficient appliances have greatly increased in response to our growing need for a more environmentally friendly society. Magnetic refrigeration is a technique that utilizes the magnetocaloric effect, with possible energy savings of up to 30% compared to commercial gas compression refrigerators. READ MORE
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2. Chemical Tuning of the Magnetic Interactions in Layer Structures
Abstract : Thin metal films have found their use in many magnetic devices. They form pseudo two-dimensional systems, where the mechanisms for the magnetic interactions between the layers are not completely understood. READ MORE
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3. Modulations in Intermetallic Families of Compounds
Abstract : This thesis is based on a study of five distinct intermetallic systems with the aim of expanding the general knowledge of aperiodically modulated crystal structures. Families of compounds that contain a variety of superstructures together with incommensurately modulated structures have been investigated mainly by means of single crystal X-ray diffraction and higher dimensional structure models. READ MORE
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4. The Structural Basis for Magnetic Order in New Manganese Compounds
Abstract : Materials with new or improved properties are crucial for technological development. To provide the foundation for future successful products, it is important to prepare and characterise new chemical compounds that could show unusual properties. READ MORE
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5. 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