Dresden 2017 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 55: Thin Films: Magnetic Anisotropy
MA 55.7: Vortrag
Donnerstag, 23. März 2017, 16:45–17:00, HSZ 101
MAX phase magnetic quaternary compounds — •Ruslan Salikhov1, Quanzheng Tao2, Iuliia Novoselova1, Johanna Rosen2, Ulf Wiedwald1, and Michael Farle1,3 — 1Faculty of Physics and CENIDE, University of Duisburg-Essen, Germany — 2Department of Physics, Linköping University, Sweden — 3Center for Functionalized Magnetic Materials, Immanuel Kant Baltic Federal University, Kaliningrad, Russia
Mn+1AXn (n = 1-3) phases, for which M is an early transition metal, A is an A-group element, and X is C (or N), are a family of inherently nanolaminated hexagonal compounds. Due to their unique structure these materials share properties usually associated with ceramics and metals [1]. The ability to stabilize quaternary compounds with isostructural solutions on M and A sites and with different stoichiometry yields a class of new magnetic MAX phase materials. We report on the magnetic properties of the recently discovered compounds: (Cr0.5Mn0.5)2GaC [2], (Mo0.5Mn0.5)2GaC [3], (Cr0.5Mn0.5)2AuC and (V,Mn)3GaC2 [4]. The (Cr0.5Mn0.5)2AuC system shows the smallest magnetic ordering temperature of TC = 120 K, high coercive field of HC = 100 mT and magnetocrystalline anisotropy energy (MAE) at T = 10 K. The MAE of (Cr0.5Mn0.5)2GaC and (Mo0.5Mn0.5)2GaC do not exceed 4 kJ/m3, both systems have similar TC = 210 K and HC = 30 mT at T = 5 K. This work is supported by DFG SA 3095/2-1. [1] M. W. Barsoum, PSSC, 28, 201 (2000). [2] R. Salikhov et al., MRL, 3, 156 (2015). [3] R. Meshkian, et al., APL Mater. 3, 076102 (2015). [4] Q. Tao, et al., APL Mater. 4, 086109 (2016).