Search for dissertations about: "transition metal magnetic"

Showing result 1 - 5 of 100 swedish dissertations containing the words transition metal magnetic.

2. 1. Tunable Magnetic Properties of Transition Metal Compounds

   Author : Solveig Felton; Per Nordblad; Peter Svedlindh; John Chapman; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Magnetic properties; Transition metal compounds; Magnetic structure; Domain structure; SQUID-magnetometry; MFM; Magnetism; Magnetism;

   Abstract : The magnetic properties of transition metal compounds have been studied using SQUID-magnetometry, magnetic force microscopy and Lorentz transmission electron microscopy. New magnetic materials have been found and their magnetic properties have been determined. How the magnetic properties of a material can be changed through e.g. READ MORE

4. 2. Fundamental Properties of Functional Magnetic Materials

   Author : Magnus Wikberg; Peter Svedlindh; Per Nordblad; Klas Gunnarsson; Amílcar Labarta; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Magnetic anisotropy; magnetic aging; magnetic semiconductors; exchange interactions; magnetic oxides; spin glasses; lithium-ion batteries; short-range magnetic order; Physics; Fysik; Engineering Science with specialization in Solid State Physics; Teknisk fysik med inriktning mot fasta tillståndets fysik;

   Abstract : Magnetic properties of powders, thin films and single crystals have been investigated using magnetometry methods. This thesis provides analysis and conclusions that are supported by the results obtained from spectroscopic and diffraction measurements as well as from theoretical calculations. READ MORE

5. 3. Magnetic properties of transition metal compounds and superlattices

   Author : Arvid Broddefalk; Uppsala universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Magnetic order; magnetocrystalline anisotropy; interlayer exchange coupling; transition metal compounds; superlattices; Materialvetenskap; Materials science; Teknisk materialvetenskap; Solid State Physics; fasta tillståndets fysik;

   Abstract : Magnetic properties of selected compounds and superlattices have been experimentally studied using SQUID (superconducting quantum interference device) and VSM (vibrating sample magnetometer) magnetometry, neutron diffraction and Mössbauer spectroscopy measurements combined with theoretical ab initio calculations. The magnetic compounds (Fe1-xMx)3P, M=Co or Mn have been studied extensively. READ MORE

6. 4. The Structural Basis for Magnetic Order in New Manganese Compounds

   Author : Therese Eriksson; Yvonne Andersson; Helmer Fjellvåg; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Inorganic chemistry; Crystal structure; Magnetic structure; Manganese compounds; Transition metal silicides; Transition metal germanides; Magnetic frustration; Neutron powder diffraction; X-ray diffraction; Magnetisation measurements; DFT; Oorganisk kemi; Inorganic chemistry; Oorganisk kemi;

   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

7. 5. Magnetic ordering and crystal structure in selected transition- metal compounds

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

   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