Regensburg 2019 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 5: Surface magnetism and magnetic coupling phenomena (joint session MA/O/TT)

MA 5.13: Vortrag

Montag, 1. April 2019, 12:45–13:00, H53

Thickness independent magnetism of the magnetic MAX phase films (Cr0.5Mn0.5)2GaC — •Iuliia P. Novoselova1, Andrejs Petruhins2, Ulf Wiedwald1, Johanna Rosen2, Michael Farle1, and Ruslan Salikhov11Faculty of Physics and Center for Nanointegration (CENIDE), University of Duisburg-Essen, Duisburg, Germany — 2Department of Physics, Linköping University, Linköping, Sweden

Atomically laminated magnetic MAX phases Mn+1AXn (n = 1, 2, 3) have attracted interest as novel materials exhibiting both ceramic and metallic properties. Here 12.5 to 156 nm thick films (Cr0.5Mn0.5)2GaC were investigated by ferromagnetic resonance, electron scanning microscopy and magnetometry. The X-ray diffraction reveals a high crystalline quality and phase purity. Magnetocrystalline anisotropy energy density of  140 mT as well as magnetization of  240 kA/m are found to not depend on thickness. All films are environmentally stable without a change of magnetic properties for more than one year at ambient conditions and without any protection layer. Such independence on thickness combined with the chemical stability makes the (Cr0.5Mn0.5)2GaC films attractive for various applications such as spintronic devices or corrosion resistant magnetic sensors. This work is supported by DFG, Grant SA 3095/2-1 and DAAD Doctoral Programmes in Germany,57214224. [1] M. W. Barsoum, Prog. Solid State Chem. 28, 201 (2000).[2] A. Petruhins, et al. Journal of Mat. Sci. 50-13, 4495 (2015).[3] R. Salikhov, et al. Mat. Res, Lett. 3-3, 156-160 (2015).[4] I. P. Novoselova, Sci. Reports 8, 2637 (2018).

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