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Magnetic properties of nanolaminated (Mo0.5Mn0.5)2GaC MAX phase

Salikhov, R. and Meshkian, R. and Weller, D. and Zingsem, B. and Spoddig, D. and Lu, J. and Ingason, A. S. and Zhang, H. and Rosen, J. and Wiedwald, U. and Farle, M. (2017):
Magnetic properties of nanolaminated (Mo0.5Mn0.5)2GaC MAX phase.
In: Journal of Applied Physics, American Institute of Physics, Melville, NY, USA, p. 163904, 121, (16), ISSN 0021-8979,
DOI: 10.1063/1.4982197,
[Online-Edition: https://doi.org/10.1063/1.4982197],
[Article]

Abstract

The magnetic properties of hexagonal (Mo0.5Mn0.5)(2)GaC MAX phase synthesized as epitaxial films on MgO (111) substrates with the c-axis perpendicular to the film plane are presented. The analysis of temperature-dependent ferromagnetic resonance (FMR) and magnetometry data reveals a ferro-to paramagnetic phase transition at 220 K. The electrical transport measurements at 5K show a negative magnetoresistance of 6% in a magnetic field of 9 T. Further analysis confirms the spin-dependent scattering of charge carriers in this layered material. A small perpendicular (c-axis) magnetocrystalline anisotropy energy density (MAE) of 4.5 kJ/m(3) at 100K was found using FMR. Accordingly, (Mo0.5Mn0.5)(2)GaC behaves similar to the (Cr0.5Mn0.5)(2)GaC MAX phase as a soft magnetic material. The density functional theory calculations reveal that the sign and the amplitude of the MAE can be very sensitive to (Mo0.5Mn0.5)(2)GaC lattice parameters, which may explain the measured soft magnetic properties. Published by AIP Publishing.

Item Type: Article
Erschienen: 2017
Creators: Salikhov, R. and Meshkian, R. and Weller, D. and Zingsem, B. and Spoddig, D. and Lu, J. and Ingason, A. S. and Zhang, H. and Rosen, J. and Wiedwald, U. and Farle, M.
Title: Magnetic properties of nanolaminated (Mo0.5Mn0.5)2GaC MAX phase
Language: English
Abstract:

The magnetic properties of hexagonal (Mo0.5Mn0.5)(2)GaC MAX phase synthesized as epitaxial films on MgO (111) substrates with the c-axis perpendicular to the film plane are presented. The analysis of temperature-dependent ferromagnetic resonance (FMR) and magnetometry data reveals a ferro-to paramagnetic phase transition at 220 K. The electrical transport measurements at 5K show a negative magnetoresistance of 6% in a magnetic field of 9 T. Further analysis confirms the spin-dependent scattering of charge carriers in this layered material. A small perpendicular (c-axis) magnetocrystalline anisotropy energy density (MAE) of 4.5 kJ/m(3) at 100K was found using FMR. Accordingly, (Mo0.5Mn0.5)(2)GaC behaves similar to the (Cr0.5Mn0.5)(2)GaC MAX phase as a soft magnetic material. The density functional theory calculations reveal that the sign and the amplitude of the MAE can be very sensitive to (Mo0.5Mn0.5)(2)GaC lattice parameters, which may explain the measured soft magnetic properties. Published by AIP Publishing.

Journal or Publication Title: Journal of Applied Physics
Volume: 121
Number: 16
Publisher: American Institute of Physics, Melville, NY, USA
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Theory of Magnetic Materials
Date Deposited: 27 Jul 2017 11:29
DOI: 10.1063/1.4982197
Official URL: https://doi.org/10.1063/1.4982197
Funders: R.S. acknowledges DFG foundation under Grant No. SA 3095/2-1., D.W. acknowledges receipt of the Alexander von Humboldt award., J.R. acknowledges the support from the Swedish Foundation for Strategic Research (SSF) through the Synergy Grant FUNCASE, and from the Knut and Alice Wallenberg (KAW) Foundation for a Fellowship Grant and Project funding (KAW 2015.0043).
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