2026-06-28T09:48:43Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/61752023-08-25T10:32:17Zcom_20.500.14352_14col_20.500.14352_15

Magnetic anisotropy in Cr_(2)GeC investigated by X-ray magnetic circular dichroism and ab initio calculations Magnuson, Martin Mattesini, Maurizio The magnetism in the inherently nanolaminated ternary MAX-phase Cr_(2)GeC 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 Cr_(2)GeC magnetic properties. 2023-06-16T15:17:06Z 2023-06-16T15:17:06Z 2023-06-16T15:17:06Z 2020-05-01 journal article https://hdl.handle.net/20.500.14352/6175 0304-8853 10.1016/j.jmmm.2020.166470 eng (CGL2013-41860-P; CGL2017-86070-R) 43606-1 CTS16:303 CTS14:310 open access Elsevier Science Bv