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MA: Fachverband Magnetismus
MA 46: Poster II
MA 46.5: Poster
Donnerstag, 21. März 2024, 15:00–18:00, Poster C
Direct observation of Néel-type skyrmions and domain walls in a ferrimagnetic DyCo3 thin film — •Chen Luo1,2, Kai Chen1,3, Victor Ukleev1, Sebastian Wintz1,4, Markus Weigand1,4, Radu-Marius Abrudan1, Karel Prokeš1, and Florin Radu1 — 1Helmholtz-Zentrum-Berlin für Materialien und Energie, Albert-Einstein-Straße 15, 12489, Berlin, Germany — 2Institute of Experimental Physics of Functional Spin Systems, Technical University Munich, James-Franck-Straße 1, 85748, Garching b München, Germany — 3National Synchrotron Radiation Laboratory, University of Science and Technology of China, 230029, Hefei, Anhui, China — 4Max-Planck-Institut für Intelligente Systeme, 70569, Stuttgart, Germany
Isolated magnetic skyrmions are at the forefront of research interests due to their potential applications in information technology. A distinct class of skyrmion hosts are rare earth - transition metal (RE-TM) ferrimagnetic materials. We report on an ferrimagnetic material DyCo3 with a strong perpendicular anisotropy, the ferrimagnetic skyrmion size can be tuned by an external magnetic field. By taking advantage of the scanning transmission X-ray microscopy and utilizing a large x-ray magnetic linear dichroism contrast that occurs naturally at the RE resonant edges, we resolve the nature of the magnetic domain walls of ferrimagnetic skyrmions. We demonstrate that through this method one can easily discriminate between Bloch and Néel type domain walls for each individual skyrmion. For all isolated ferrimagnetic skyrmions, we observe that the domain walls are of Néel-type.
Keywords: skyrmion; ferrimagnet; STXM; XMCD; XMLD