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2021-11-25: Welcome to Assoc. Prof. Dr. Asli Cakir
We welcome Assoc. Prof. Dr. Asli Cakir from the Department of Metallurgy and Materials Engineering, Mugla Sitki Kocman University, Turkey, who is supported by a fellowship granted by the Scientific and Technological Research Council of Turkey and will be with us until November 2022. Dr Cakir will carry out work on the investigation of interfacial pinning phenomena in artificial shell-ferromagnets by preparing multilayer Heusler films and studying their high-coercivity properties. During a previous visit to our laboratories in 2013, she had carried out research related to the construction of structural and magnetic phase diagrams of functional Heusler materials, which also made up the main theme of her PhD studies. Since then, we have been collaborating through mutual visits on the properties of magneto-structural transitions in Heusler alloys.
We wish her a fruitful and enjoyable stay in Duisburg..
2021-11-03: We WELCOME Sakia and Jonas in our team!
B.Sc. Sakia Noorzayee und B.Sc. Jonas Wiemeler started their Master Theses (Physics) on Sept 1st, 2021 in our group.
Jonas will work with Anna Semisalova to produce ultraclean Fe/Rh films in UHV to better understand and describe the
"Spin dynamics of ultrathin Fe/Rh multilayers".
And Sakia works with Nicolas Josten to improve "The magnetic hysteresis of transition metal alloys through magnetic annealing exemplified by NiMn and CoTiGe".
We wish them a good time and excellent results!
2021-09-30: Action Call of the European Raw Materials Alliance
The activities of the collaborative research center SFB/TRR 270 of which we are a partner started ahead of its time recognizing the importance of magnet technology for a carbon-neutral future of Europe. Learn more about it here .
2021-08-24: 2nd Int. Workshop on Functional MAX Materials
We are organizing an international workshop on the properties of Functional MAX Materials (2nd FunMAX 2021) at the Kirensky Institute of Physics and Siberian Federal University in Krasnoyarsk, September 14-17, 2021 in an ONLINE format. The 2nd FunMAX workshop will bring together scientists interested in the properties of MAX phase materials including their 2D derivatives (MXenes). Registration is free and open till Aug 30.2021. Please use this link and send it to funmax@kirensky.ru.
2021-05-31: Theory predicts Magnetic Nutation Waves
In our recent publication on "Dispersion relation of nutation surface spin waves in ferromagnets" we predict the existence a new type of spin wave with surprising high frequency properties. This finding may become of importance for the development of novel magnonic information processors at THz frequencies. Contact: anna.semisalova@uni-due.de
2021-05-25: MaNaCa Training Workshop 2021
We are organizing a summer school as part of our European project with Armenia and Greece "Magnetic Nanoparticles for Cancer Therapy (MaNaCa)" (see for more details http://www.h2020-manaca.eu/). The conference will take place on June 16-18, 2021 in an online format.
2020-10-07: DAAD funded research stay of scientists from Russia
We welcome in our group Dr. Natalia Shkodich (Merzhanov Institute of Structural Macrokinetics and Materials Science, Russian Academy of Sciences) and Dr. Mikhail Cherkasskii (Saint Petersburg State University) who recently joined us for a 3 months research stay funded by DAAD scholarships ("Research stays for University Academics and Scientists, 2020" and "Dmitrij Mendeleev" Program).

Dr. Natalia Shkodich is an expert on combining High-Energy Ball Milling (HEBM) and Spark Plasma Sintering (SPS) to produce nanostructured and amorphous materials from immiscible metals (so-called pseudo alloys), metallic glasses, and high-entropy alloys (HEAs). She aims at producing novel nanostructured CoCrFeNiGa magnetic high entropy alloy (Mag HEA) particles and volume MagHEA materials with a large magnetization, high Curie temperature and tuneable coercivity as well as excellent mechanical properties.

Interests of Assoc. Prof. Dr. Mikhail Cherkasskii are focused on the understanding of magnetization nutation in ferromagnets and its coupling to precession and ferromagnetic resonance. He is working on the development of an analytical approach to describe inertial spin dynamics, nutation resonance and collective excitations in ferromagnets.
2020-07-24: New publication in AIP Advances - Editor's Pick!
Reversal of uniaxial magnetic anisotropy in Fe/GaAs (110) films driven by surface relaxation: An in situ ferromagnetic resonance study by Babli Bhagat et al.

Performing in situ studies of ferromagnetic resonance in thin metallic films in ultrahigh vacuum, we found a dramatic change of in-plane magnetic anisotropy in 4 nm Fe film grown on GaAs(110) substrate occurring after deposition. Initially grown, Fe/GaAs(110) film exhibits unusual uniaxial in-plane anisotropy which reverses its sign within 40 hours while the film is kept in vacuum at room temperature. The effect of surface contamination has been excluded using surface-sensitive techniques AES and LEED, which let us to conclude on metastability and ongoing surface relaxation of Fe film. This finding opens up a further study of such island-like grown metastable thin films where magneto-morphological transitions can be altered by temperature and other external stimuli.
2020-03-10: Non-standing spin-waves in confined micrometer-sized ferromagnetic structures under uniform excitation
Editors Pick (!) Non-standing spin-waves in confined micrometer-sized ferromagnetic structures under uniform excitation Appl. Phys. Lett. 116, 072401 (2020); https://doi.org/10.1063/1.5139881 Santa Pile et al. A long effort within an international collaboration (U. Linz, Duisburg-Essen, Stanford) including partners from the CRC/TRR 270 broke new ground in element-specific magnetic imaging with picosecond temporal and few nanometer spatial resolution. A non-standing characteristic of directly imaged spin-waves in confined micrometer-sized ultrathin Permalloy (Ni80Fe20) structures is reported along with evidence of the possibility to alter the observed state by modifications to the sample geometry.
2020-03-10: Dynamic unidirectional anisotropy in cubic FeGe with antisymmetric spin-spin-coupling
Nicolas Josten, et al. Scientific Reports 10, 2861, (2020) DOI: 10.1038/s41598-020-59208-8 Successful collaboration with TU-Darmstadt within CRC/TRR 270. We studied bulk polycrystalline B20 FeGe samples prepared in Darmstadt and measured ferromagnetic resonance spectroscopy. As a result we discovered strong (dynamical) unidirectional anisotropy. Such anisotropy is not present in static magnetometry measurements. B20 FeGe exhibits inherent Dzyaloshinskii-Moriya interaction, resulting in a nonreciprocal spin-wave dispersion. By X-band ferromagnetic resonance spectroscopy at 276 K  1 K, near the Curie temperature, a distribution of resonance modes was observed in accordance with the cubic anisotropy of FeGe. This distribution exhibits a unidirectional anisotropy, i.e. shift of the resonance field under field inversion, of KUD = 960 J/m3  10 J/m3, previously unknown in bulk ferromagnets. Additionally, more than 25 small amplitude standing spin wave modes were observed inside a micron sized FeGe wedge, measured at 293 K  2 K. These modes also exhibit unidirectional anisotropy. This effect, only dynamically measurable and not detectable in static magnetometry measurements, may open new possibilities for directed spin transport in chiral magnetic systems.
2020-01-17: Highlighted Publication
The publication based on our long term collaboration with the group of Vernica Salgueirio (university of Vigo, Spain) Shaping iron oxide nanocrystals for magnetic separation applications has been selected to be a part of a themed collection International Year of the Periodic Table: As attractive as magnets applications for magnetic materials. This themed collection is the seventh, and final, in a series celebrating the International Year of the Periodic Table. As Attractive as Magnets Applications for Magnetic Materials features papers from across the Materials and Nano journal portfolio; Materials Horizons, Nanoscale Horizons, Nanoscale, Nanoscale Advances and Journal of Materials Chemistry A, B & C. The papers selected for this themed issue focus on the current hot trends in the field of magnetic materials.