In our group we offer topics for bachelors' theses on interesting magnetic materials. The systems under investigation are, in general, grown using different methods. Therefore, the students gain insights into the synthesis of the materials as well as various characterization techniques. In principle, two different types of subjects can be worked on:
Synthesis and characterization of magnetic bulk crystals: Ssingle crystals of intermetallic magnetic systems are produced sing the triarc-Czochralski crystal growth technique. Subsequently, these materials are structurally and magnetically characterized in terms of X-ray diffraction, SQUID magnetometry and electric transport methods. We focus on B20 transition metal silicides and germanides, but we work also on novel and interesting systems which present, e.g., topologically non-trivial spin structures such as skyrmions. These kind of spin vortices occur in a small region of the magnetic phase diagram and are candidates for new applications in data storage and handling.
Thin film growth of magnetic materials: Using molecular beam epitaxy thin films of magnetic material can be grown controlled on substrates. Due to the non-centrosymmetric unit cell B20 materials show interesting spin structures which are investigated in terms of SQUID magnetometry and transport measurements. Moreover, we work on heterostructures of helical magnets and superconductors and aim to control the superconducting critical temperature by changing the spin structures of the magnet. Within this studies, students can get insight into the work with ultra-high vacuum systems.