Regensburg 2022 – scientific programme
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MA: Fachverband Magnetismus
MA 23: Magnetic Domain Walls
MA 23.2: Talk
Wednesday, September 7, 2022, 09:45–10:00, H48
Magneto-Optic Effects and Domain Imaging in EuO/Co Heterostructure — •Seema Seema1, Henrik Jentgens1, Paul Rosenberger1,2, and Martina Müller1 — 1Fachbereich Physik, Universität Konstanz, 78457 Konstanz, Germany — 2Fakultät Physik, Technische Universität Dortmund, 44221 Dortmund, Germany
Ferromagnetic semiconductors and stable half-metallic ferromagnets with Curie temperatures (Tc) equal to or more than room temperature have been sought for their applications in novel spintronic devices. Europium oxide (EuO) is one of the potential candidates as it possesses strong ferromagnetism of 7 µB/Eu atom with a Tc of 69 K. The present work focuses on the magnetization reversal mechanisms and domain images in EuO probed using magneto-optic Kerr microscopy. We aimed to visualize magnetic proximity effect induced changes in magnetic domains and Tc of EuO in a EuO/Metal heterostructure. We synthesized EuO/Co thin film using molecular beam epitaxy and observed differences in the domain saturation behavior as well as the Kerr rotation below Tc. This had been performed by magnetic hysteresis measurement along with simultaneous domain imaging to explore the temperature-dependent magneto-optic effects in EuO in the proximity of Co. This study of magnetic domains in EuO/Co heterostructure can provide insights into achieving room-temperature ferromagnetism in EuO.