Sökning: "ENERGY ELECTRON-DIFFRACTION"

Visar resultat 1 - 5 av 62 avhandlingar innehållade orden ENERGY ELECTRON-DIFFRACTION.

1. 1. 3D Electron Diffraction : Application and Development towards High-quality Structure Determination

   Författare :Yunchen Wang; Wei Wan; Xiaodong Zou; Junliang Sun; Mauro Gemmi; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; three-dimensional electron diffraction; structure determination; rotation electron diffraction; Inorganic Chemistry; oorganisk kemi;

   Sammanfattning : Electron crystallography has been proven to be effective for structure determination of nano- and micron-sized crystals. In the past few years, 3D electron diffraction (3DED) techniques were used for the structure solution of various types of complex structures such as zeolites, metal-organic frameworks (MOF) and pharmaceutical compounds. LÄS MER

3. 2. Alkali Metal Adsorption on Metals Studied by Hiqh Resolution Core Level Spectroscopy and Low Energy Electron Diffraction

   Författare :Edvin Lundgren; Synkrotronljusfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Low Energy Electron Diffraction; Physics; Core Level Spectroscopy; Surface Structures Photoelectron Emission; Single Crystal Surfaces; Alkali Adsorption; Aluminium; Metals; Alkali Metals; Fysik; LEED.; Fysicumarkivet A:1996:Lundgren;

   Sammanfattning : Alkali metal adsorption on metals is studied by High Resolution Core Level Spectroscopy (HRCLS) and Low Energy Electron Diffraction (LEED). The studies can be divided into two parts: adsorption of alkali multilayers and alkali adsorption in the submonolayer regime. LÄS MER

4. 3. Spectroscopical and electron diffraction studies of some unsaturated chlorohydrocarbons

   Författare :Astrid Borg; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : This thesis deals with structural properties of unsaturated chlorhydrocarbons of general formulas C^H^Cl, C^H^Cl and as studied by microwave spectroscopy, electron diffraction and vibrational spectroscopic methods. The two former methods both give values of molecular structure parameters in gas phase, but due to different averages of the thermal motion the structures arrived at are not comparable. LÄS MER

5. 4. Transmission Electron Microscopy for Characterization of Structures, Interfaces and Magnetic Moments in Magnetic Thin Films and Multilayers

   Författare :Hans Lidbaum; Klaus Leifer; Peter Svedlindh; Josef Zweck; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Transmission electron microscopy; TEM; magnetism; multilayer; superlattice; thin films; amorphous metals; electron energy-loss magnetic circular dichroism; EMCD; electron diffraction; Magnetism; Magnetism; Surfaces and interfaces; Ytor och mellanytor; Physics; Fysik; Engineering Science with specialization in Solid State Physics; Teknisk fysik med inriktning mot fasta tillståndets fysik; Materiefysik; Physics of Matter;

   Sammanfattning : Structural characterization is essential for the understanding of the magnetic properties of thin films and multilayers. In this thesis, both crystalline and amorphous thin films and multilayers were analyzed utilizing transmission electron microscopy (TEM). LÄS MER

7. 5. Amorphous, Nanocrystalline, Single Crystalline: Morphology of Magnetic Thin Films and Multilayers

   Författare :Andreas Liebig; Björgvin Hjörvarsson; Gabriella Andersson; Frank Klose; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Multilayer; Superlattice; X-ray diffraction; X-ray reflectometry; electron diffraction; Rutherford backscattering spectrometry; Interdiffusion; thin film growth; transmission electron microscopy; Epitaxial growth; Fysik; Physics; Fysik;

   Sammanfattning : Properties of magnetic thin film devices cannot be understood without detailed knowledge of their structure. For this purpose, a variety of thin film and multilayer systems have been studied. LÄS MER