Open Positions
There are various opportunities in different projects, please contact Michael Farle.
We are continuously looking for highly motivated, skilled students and coworkers.
Magnetism of High Entropy Alloys
(contact Prof. Dr. M. Farle)
The Ph.D. thesis has the goal to identifiy , produce and optimize magnetic high entropy alloy (magHEA) particles using high energy ball milling (HEBM). The picture shows the chemical elemental map of a HEA (CoCrFeNiGa). Such alloys have very interesting secondary functionalities and are discussed for future applications in magnetic refrigeration and transformers or sensors.
M.Sc. Thesis Physics/Nanoengineering
(contact Prof. Dr. U. Wiedwald)
Two-dimensional (2D) transition metal carbides or nitrides – so called MXenes – have been recently discovered and have already shown a fascinating variety of electronic, optical, and mechanical properties. In the proposed thesis, you will synthesize 2D MXenes of various chemical composition using selective chemical etching to introduce magnetic properties to 2D structures. The produced 2D materials will be structurally and magnetically characterized (XRD, AFM, SEM, TEM, FMR, magnetometry) at the University of Duisburg-Essen and within national and international collaborations.
BA/MA Thesis offer: Detection of Inertia effects (nutation) in spin dynamics
(contact Dr. A. Semisalova)
Inertia effects lead to a wobbling of the axis of the earth -in other words nutation . Similar Inertia effects have been predicted and recently observed in spin dynamics [1,2] . In this thesis you have the chance to contribute to the experimental investigations to observe this effect by microwave spectroscopy /THz spectroscopy in magnetic nanoscale structures.
[1] Neeraj, K., N. Awari, et al, Inertial spin dynamics in ferromagnets. Nature Physics 17(2) (2021) 245.
[2] Cherkasskii,, M, et al. , Nutation resonance in ferromagnets. Physical Review B 102(18) (2020) 184432.
BA/MA Thesis offer: Magnetization dynamics in laterally patterned magnetic landscapes
(contact Dr. A. Semisalova)
Objective: Spin Pumping effects in laterally structured ferro- / paramagnetic lateral architectures
Spin pumping or transfer of angular momentum transfer from ferromagnetic into dia/paramagnetic films has been a “hot” topic in modern spintronics for the last couple of years. In this thesis you will participate in the investigation of novel structures by means of microwave spectroscopy, magnetometry and atomic/magnetic force microscopy.
Collaboration with HZDR (Dresden), IMMM (Le Mans, France)
BA/MA Thesis offer: Magnetism and Spin Dynamics in 2D materials
(contact Dr. A. Semisalova, Prof. Dr. U. Wiedwald)
Novel room temperature 2D materials have been theoretically predicted, and first experimental evidence for their existence has been obtained. In this thesis you will investigate 2D materials - so called “MXene materials” with microwave spectroscopy, magnetometry, and atomic/magnetic force microscopy.
Pazniak, H., et al,. ACS Nano (2021).
In an alternative approach 2D films will be grown and characterized in UHV.
Bhagat, B., et al AIP Advances 10(7) (2020) 075219.
Contact: Dr. Anna Semisalova, Dr. Hanna Pazniak, Dr. Ulf Wiedwald