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Antiferromagnetism of CoO-NiO bilayers studied by XMLD spectroscopy
- Source :
- Journal of Physics D: Applied Physics. 54:185001
- Publication Year :
- 2021
- Publisher :
- IOP Publishing, 2021.
-
Abstract
- CoO-NiO epitaxial bilayer system grown on MgO(001) substrate is investigated using x-ray magnetic linear dichroism (XMLD) spectroscopy with varying CoO overlayer thickness. An analysis of the Ni L 2 edge XMLD spectra using anisotropic XMLD formulation within a two-domain model reveals that the Ni moments undergo a spin reorientation with increasing CoO thickness. Such a spin reorientation is attributed to the competing magnetic interactions at both the NiO film interfaces, suggesting the existence of a sharp horizontal domain wall separating the in-plane and out-of-plane NiO domains. Our study also demonstrates a possible way to investigate the spin-structure along the thickness within the same chemical structure using a model-based approach, in a noninvasive manner.
Details
- ISSN :
- 13616463 and 00223727
- Volume :
- 54
- Database :
- OpenAIRE
- Journal :
- Journal of Physics D: Applied Physics
- Accession number :
- edsair.doi...........3c97f9bd02d6ddaa6340b68965c9462d