In this thesis with pulsed laser deposition Nd-Fe-B layers were deposited. The Nd-Fe-B layers were deposited both on chromium and on tantalum buffers. The layers, which were deposed on tantalum buffers, showed a strong dependence of the nicrostructure and the magnetic properties on the deposition temperature. On layers which were deposited at depos...
Germany
Germany
Available from: http://deposit.ddb.de/cgi-bin/dokserv?idn=973328827 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische Informationsbibliothek / SIGLE / DE / Germany
Germany
The present work is divided as follows. Firstly, a brief review of the fundamentals of ferromagnetism with focus on the case of the Heusler alloys is given. The following chapter deals with initial experiments concerning the growth of Co_2MnSi films. Afterwards the experimental methods and their special features with respect to this work will be de...
The increasing emission of CO_2, due to the growing power consumption, requires more and more efforts to replace fossile fuels by sophisticated no-emission systems in power generation. Using photovoltaics is one possible option. Producing electricity by solar energy, photovoltaics may contribute to a significant reduction of CO_2 emissions. The bas...
In the present work, the plasticity of quasicrystals, metallic glasses and structurally complex alloy phases was investigated. The concepts of plasticity for simple crystalline materials cannot be applied to these materials without substational modification. Plastic deformation experiments and subsequent microstructural investigations by means of t...
In this work the diffusion in dense and structurally stable nanocrystalline samples was studied without any influence of porosity, relaxation and migration of the grain boundaries. Soft and hard magnetic materials are used as a model system, because in these materials the self diffusion is important for the generation of the magnetic anisotropy. In...
Germany
