Magnetic anisotropy in Cr2GeC investigated by X-ray magnetic circular dichroism and ab initio calculations

Martin Magnuson, Maurizio Mattesini
  • Journal of Magnetism and Magnetic Materials, May 2020, Elsevier
  • DOI: 10.1016/j.jmmm.2020.166470

Magnetic anisotropy in Cr2GeC investigated by X-ray magnetic circular dichroism

What is it about?

The magnetism in the inherently nanolaminated ternary MAX-phase Cr2GeC is investigated by element-selective, polarization and temperature-dependent, soft X-ray absorption spectroscopy and X-ray magnetic circular dichroism.

Why is it important?

The measurements indicate an antiferro-magnetic Cr-Cr coupling along the c-axis of the hexagonal structure modulated by a ferromagnetic ordering in the nanolaminated ab-basal planes.

Perspectives

Associate Prof. Martin Magnuson
Department of Physics, Chemistry and Biology (IFM)

As shown in this work, this spin distortion generates an overall residual spin moment inside the unit cell resembling that of a ferri-magnet. Due to the different competing magnetic interactions, electron correlations and temperature effects both need to be considered to achieve a correct theoretical description of the Cr2GeC magnetic properties.

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http://dx.doi.org/10.1016/j.jmmm.2020.166470

The following have contributed to this page: Associate Prof. Martin Magnuson