Sökning: "superlattices"
Visar resultat 1 - 5 av 62 avhandlingar innehållade ordet superlattices.
1. Magnetic properties of transition metal compounds and superlattices
Sammanfattning : 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. LÄS MER
2. Low-temperature deposition of epitaxial transition metal carbide films and superlattices using C60 as carbon source
Sammanfattning : The transition metal carbides are chemical compounds with a unique set of propertiesused in many thin film applications. In this work, thin films of group 4-5 transitionmetal carbides and superlattices were deposited at low temperatures by simultaneousevaporation of C60 using either metal e-beam evaporation or d.c. magnetron sputtering. LÄS MER
3. Single-crystal Mo/V superlattices : growth, structure, and hydrogen uptake
Sammanfattning : Fundamental studies concerning the growth, structural characterization and hydrogen uptake of single-crystal (00 l )-oriented Mo/V superlattices have been performed. The superlattices were grown by dual-target magnetron sputtering in pure Ar-atmosphere < 6·10-3 Torr on (001)-oriented MgO substrates. LÄS MER
4. Phase Transitions and Phase Formation of Hydrogen in Quasi-2D Lattices
Sammanfattning : The role of the dimensionality and strain state of metallic lattices on the phase behavior of dissolved hydrogen was explored. Metallic superlattices with well defined hydrogen absorption potential on the nm scale, were utilized as test systems. LÄS MER
5. Influence of Self-trapping, Clamping and Confinement on Hydrogen Absorption
Sammanfattning : The dissociation of hydrogen molecules at surfaces is the first step in the absorption process. If the absorbing material is covered by an oxide, this layer will determine the effective uptake rate of an underlying absorbing material. LÄS MER