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Magnetic anisotropy in Cr2GeC investigated by X-ray magnetic circular dichroism and ab initio calculations
| Content Provider | Semantic Scholar |
|---|---|
| Author | Magnuson, Martin Mattesini, Maurizio |
| Copyright Year | 2020 |
| Abstract | Abstract 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. 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. The weak chromium magnetic moments are an order of magnitude stronger in the nanolaminated planes than along the vertical axis. Theoretically, a small but notable, non-spin-collinear component explains the existence of a non-perfect spin compensation along the c-axis. 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. |
| Starting Page | 166470 |
| Ending Page | 166470 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.jmmm.2020.166470 |
| Alternate Webpage(s) | https://arxiv.org/pdf/2001.06396v1.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/j.jmmm.2020.166470 |
| Volume Number | 501 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
