Abstract:
The combination of neutron radiography with one dimensional polarisation analysis developed in this thesis allows the spatially resolved determination of the magnetic properties of weakly ferromagnetic substances. This method can yield valuable information on the nature of the underlying phase transition. The requirements for all components of the experimental setup and their influence on the maximum spatial resolution are discussed extensively in this work. Radiographic as well as tomographic measurements on the substances Pd1-xNix and Ni3Al show the potential of this method on the one hand for the determination of sample quality and on the other hand for the study of the influence of inhomogeneities on the formation of new magnetic order at low temperatures.