2020-01-17: Highlighted Publication

The publication based on our long term collaboration with the group of Verónica Salgueiriño (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.

2019-12-06: Doktorandenstellen im Rahmen des SFB/TRR 270

In unserer Arbeitsgruppe sind drei Doktorandenstellen im Rahmen des SFB/TRR 270 zum nächstmöglichen Zeitpunkt zu folgenden Projekten zu besetzen. A04: „Shell Ferromagnetic Materials: Tuning the magnetic hysteresis by nanoscale selective phase decomposition” B02: “Magnetic MAX phase thin films for smart magnetocalorics” B09: “Hierarchical structuring of magnetocaloric materials with nm resolution”

2019-11-26: Cooperate Research Center TRR 270 HoMMage

We celebrate the new Cooperate Research Center TRR 270 HoMMage “Hysteresis Design of Magnetic Materials for Efficient Energy Conversion”. Starting Jan 1st, 2020 we will design and develop magnetic materials for applications in electro mobility, robotics and energy converters over the first period till Dec. 31st , 2023. https://www.tu-darmstadt.de/universitaet/aktuelles_meldungen/einzelansicht_244928.en.jsp In our group we have three positions for Ph.D. students available on projects related to this programme (see separate announcements).

2019-09-26: Workshop SpinS-2019 gathers experts in nanomagnetism at the University of Duisburg-Essen

Next week, 2-4 October 2019, more than 40 experts in physics, chemistry and materials science from 12 countries meet in “Die Wolfsburg” Academy in Mülheim an der Ruhr/Duisburg to share their research results and discuss new concepts in nanomagnetism and its applications, like energy-efficient computing and magnetic refrigeration. The Workshop program covers the most recent experimental and theoretical research developments related to spin phenomena in nanoscale systems as well as the design, properties and applications of magnetic nanomaterials. It includes several emergent technologies based on spin-orbit torques, ultrafast spin dynamics in THz frequency range, magnonics, magnetoacoustics as well as novel materials like shell-ferromagnets, MAX phases (including 2D MXenes), and nanohybrids for theranostics applications actively developed in the working group AG Farle. The SpinS-2019 provides an interdisciplinary platform for meeting the specialists in fabrication and imaging of 2D and 3D magnetic nanostructures, and experts working towards various application areas – from spin dynamics and magnetic memory to additive manufacturing and biomedicine. The meeting is organized by Michael Farle, Katharina Ollefs and Anna Semisalova, with a technical support of Michael Vennemann and Sabina Grubba. Organizers highly appreciate the financial support of the Center for Nanointegration Duisburg-Essen (CENIDE). SpinS-2019 website Flyer

2019-09-26: High Entropy Alloys: How to induce ferromagnetism?
High-entropy alloys are currently the focus of significant attention in materials science and engineering. Some HEAs have considerably better strength-to-weight ratios, with a higher degree of fracture resistance, tensile strength, as well as corrosion and oxidation resistance than conventional alloys. In the recent publication Mehmet Acet showed how to introduce strong magnetism in a Cr20Mn20Fe20Co20Ni20 high-entropy alloy. He could show through the thermal expansion properties that the alloy carries similar anti-Invar properties as FCC-Fe, but unlike FCC-Fe it is stable throughout its solid-state temperature range. Therefore, by exploiting the anti-Invar property and expanding the lattice of the alloy by introducing interstitial carbon, we make Cr20Mn20Fe20Co20Ni20 ferromagnetic with a Curie temperature lying above room temperature. For details see: https://doi.org/10.1063/1.5120251

Picture from Von Shaoqing Wang - Wang, Shaoqing (13 December 2013). "Atomic Structure Modeling of Multi-Principal-Element Alloys by the Principle of Maximum Entropy". Entropy 15 (12): 5536–5548. DOI:10.3390/e15125536., CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=32060405

2019-09-26: A novel concept for bio-inspired architectures
A novel concept for bio-inspired architectures in up-scalable, energy efficient computing is discussed in our recent publication “Biologically encoded magnonics”. For details read here (https://www.nature.com/articles/s41467-019-12219-0)