|Magnetismus niedrigdimensionaler Systeme, Selbstorganisation, Bahn-und Spinmagnetismus, Magnetotransport
Willkommen bei der Arbeitsgruppe Farle
"Struktur und Magnetismus nanoskaliger Systeme"
Fakultät für Physik
Experimentalphysik - AG Farle
Anfahrts- und Lageplan, Fahrplanauskunft
+49 (0)203 37-92382
+49 (0)203 37-92098
Prof. Dr. Michael Farle
+49 (0)203 37-92075
Raum ME 348
+49 (0)203 37-92382
+49 (0)203 37-93145
Termine & Neuigkeiten
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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).
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)
2019-05-20: Magnetite-Gold nanohybrids as ideal all-in-one platforms for theranostics
Maria V. Efremova, Victor A. Naumenko, Marina Spasova, Anastasiia S. Garanina, Maxim A. Abakumov, Anastasia D. Blokhina, Pavel A. Melnikov, Alexandra O. Prelovskaya, Markus Heidelmann, Zi-An Li, Zheng Ma, Igor V. Shchetinin, Yuri I. Golovin, Igor I. Kireev, Alexander G. Savchenko, Vladimir P. Chekhonin, Natalia L. Klyachko, Michael Farle, Alexander G. Majouga and Ulf Wiedwald
was published in Scientific Reports in July 2018 and is listed by the journal among the top 25 articles in the collection 'Chemistry Top 100' articles in 2018. This list is based on most highly accessed chemistry articles covering January-December 2018.
(DOI: 10.1038/s41598-018-29618-w | https://www.uni-due.de/agfarle/highlights)
2019-04-29: Energy Technology "Best of 2018"
Our review article "Hysteresis Design of Magnetocaloric Materials—From Basic Mechanisms to Applications"
Franziska Scheibel, Tino Gottschall, Andreas Taubel, Maximilian Fries, Konstantin P. Skokov, Alexandra Terwey, Werner Keune, Katharina Ollefs, Heiko Wende, Michael Farle, Mehmet Acet, Oliver Gutfleisch, Markus E. Gruner, (Collaboration partners from TU Darmstadt and U. Duisburg-Essen)
published in Energy Technology in 2018 has been named one of the top articles of the year as the "Best of 2018".
This selection is based upon the download and citation numbers as well as the opinions and feedback of the editorial office of the journal.
Understanding hysteresis: Materials with magnetostructural phase transitions (MSPT) show a large magnetocaloric effect (MCE). The understanding of MSPT and its thermal hysteresis requires the knowledge about the electronic, magnetic, and lattice entropy contributions. In this Review, we provide an overview of the properties of MSPT in La–Fe–Si, Heusler alloys, Mn3GaC, and Fe2P‐type materials with respect to the MCE and its reversibility based on studies under static/dynamic conditions at micro‐ and mesoscopic scales.
2019-04-10: MA PhD Focus Session “Biogenic Spin Phenomena”, DPG SKM Spring Meeting, Regensburg, March 31- April 5, 2019
Iuliia Novoselova (firstname.lastname@example.org)
Thomas Feggeler (email@example.com)
Irene Iglesias (firstname.lastname@example.org)
Nico Rothenbach (email@example.com)
Teresa Weßels (firstname.lastname@example.org)
Benjamin Zingsem (email@example.com)
The PhD Focus session “Biogenic Spin Phenomena”, which was organized by Ph.D. students from the group of M. Farle, H. Wende and T. Weßels from FZ Jülich, assembled a group of prominent experts to share insights and perspectives of Biomagnetism. The symposium with about 80 participant and funded by the DPG was successful and established new links between research groups.
The picture shows: Front row: Prof. M. Winklhofer, Prof. C. Monzel, Prof. R. Dunin-Borkowski, Prof. G. V. Kurlyandskaya; Back row: Prof. M. Farle, I. Iglesias, T. Weßels, Th. Feggeler, N. Rothenbach, I. Novoselova, B. Zingsem. We thank all speakers for their excellent contribution and an extraordinary panel discussion. For us, PhD students, the organization of the event was a great experience. We are very grateful to the DPG, the jDPG, the University of Duisburg-Essen, and the Forschungszentrum Jülich for enabling this experience. In particular, we would like to acknowledge the Center of Nanointegration of Duisburg-Essen University CENIDE for financial support.