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Magnetic properties of nanolaminated (Mo0.5Mn0.5)(2)GaC MAX phase
University of Duisburg Essen, Germany.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, Faculty of Science & Engineering.
University of Duisburg Essen, Germany.
University of Duisburg Essen, Germany; Forschungszentrum Julich, Germany; Forschungszentrum Julich, Germany.
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2017 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 121, no 16, 163904Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
AMER INST PHYSICS , 2017. Vol. 121, no 16, 163904
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-137855DOI: 10.1063/1.4982197ISI: 000400382200011OAI: oai:DiVA.org:liu-137855DiVA: diva2:1105059
Note

Funding Agencies|DFG foundation [SA 3095/2-1]; Alexander von Humboldt award; Swedish Foundation for Strategic Research (SSF) through the Synergy Grant FUNCASE; Knut and Alice Wallenberg (KAW) Foundation [KAW 2015.0043]

Available from: 2017-06-02 Created: 2017-06-02 Last updated: 2017-06-20

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CiteExportLink to record
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