Berlin 2018 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 4: Spin structures and magnetic phase transitions
MA 4.8: Vortrag
Montag, 12. März 2018, 11:30–11:45, EB 202
Magnetic characterization of the nanolaminated magnetic Mn2GaC MAX phase — •Iuliia Novoselova1, Ruslan Salikhov1, Arni Ingason2, Marina Spasova1, Johanna Rosen2, Ulf Wiedwald1,3, and Michael Farle1,4 — 1Faculty of Physics and CENIDE, University of Duisburg-Essen, Duisburg, Germany — 2Department of Physics, Linköping University, Linköping, Sweden — 3National University of Science and Technology MISIS, Moscow, Russia — 4Center for Functionalized Magnetic Materials, Immanuel Kant Baltic Federal University, Kaliningrad, Russia
Inherently nanolaminated Mn+1AXn (n=1,2,3) compounds - MAX phases - attract interest, since these materials provide unique anisotropic structural and physical properties [1]. Additionally, materials share properties associated with ceramics and metals [1]. The ternary Mn2GaC MAX phase has been synthesized as a hetero-epitaxial film with Mn as the exclusive M element [2]. We performed a comprehensive study of the temperature-dependent magnetization, magnetoresistive (MR) and magnetostrictive (MS) properties. The system exhibits complex antiferromagnetic states with spin-reorientation transition at Tt = 214 K. Large uniaxial MS of 450 ppm with sign inversion at Tt was observed. MS is accompanied by highly asymmetric MR up to 3% at B = 9 T [4]. This work is supported by DAAD 57214224 and DFG Grant SA 3095/2-1. [1] M. W. Barsoum, Prog. Solid State Chem. 28, 201 (2000). [2] A. S. Ingason et al., Mater. Res. Lett. 2, 89-93 (2014). [3] R. Salikhov, et al. J. Appl. Phys. 121, 163904 (2017). [4] Iu. P. Novoselova, et al. (under review).