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Dataset associated with "Magnetic domain texture and the Dzyaloshinskii-Moriya interaction in Pt/Co/IrMn and Pt/Co/FeMn thin films with perpendicular exchange bias"
Citation
Khan, Risalat A. and Nembach, Hans T. and Ali, Mannan and Shaw, Justin M. and Marrows, Christopher H. and Moore, Thomas A. (2018) Dataset associated with "Magnetic domain texture and the Dzyaloshinskii-Moriya interaction in Pt/Co/IrMn and Pt/Co/FeMn thin films with perpendicular exchange bias". University of Leeds. [Dataset] https://doi.org/10.5518/429
Dataset description
Antiferromagnetic materials present us with rich and exciting physics, which we can exploit to open new avenues in spintronic device applications. We explore perpendicularly magnetized exchange biased systems of Pt/Co/IrMn and Pt/Co/FeMn, where the crossover from paramagnetic to antiferromagnetic behavior in the IrMn and FeMn layers is accessed by varying the thickness. We demonstrate, through magneto-optical imaging, that the magnetic domain morphology of the ferromagnetic Co layer is influenced by the Nèel order of the antiferromagnet (AFM) layers. We relate these variations to the anisotropy energy of the AFM layer and the ferromagnet-antiferromagnet (FM-AFM) inter-layer exchange coupling. We also quantify the interfacial Dzyaloshinskii-Moriya interaction (DMI) in these systems by Brillouin light scattering spectroscopy. The DMI remains unchanged, within experimental uncertainty, for different phases of the AFM layers, which allows us to conclude that the DMI is largely insensitive to both AFM layer spin order and exchange bias. Understanding such fundamental mechanisms is crucial for the development of future devices employing chiral spin textures, such as Nèel domain walls and skyrmions, in FM-AFM heterostructures.
| Keywords: | Dzyaloshinskii-Moriya interaction, Antiferromagnet, Exchange bias, Magnetic domains, Spintronics | ||||||||
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| Subjects: | F000 - Physical sciences > F300 - Physics | ||||||||
| Divisions: | Faculty of Engineering and Physical Sciences > School of Physics and Astronomy | ||||||||
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| License: | Creative Commons Attribution 4.0 International (CC BY 4.0) | ||||||||
| Date deposited: | 08 Aug 2018 13:42 | ||||||||
| URI: | https://archive.researchdata.leeds.ac.uk/id/eprint/408 | ||||||||
Files
Documentation
readme [1kB]  |
readme [1kB] 
readme [1kB] Data
Figure 1 Coercivity vs Co layer thickness for the two systems [139B] |
Figure 1 Exchange bias vs Co layer thickness for the two systems [126B] |
Figure 2 Coercivity and EB vs IrMn layer thickness [227B] |
Figure 3a Magneto-optic images of mangtic domain vs IrMn layer thickness [367kB]  |
Figure 3b [357kB]  |
Figure 3c [350kB]  |
Figure 3d [367kB]  |
Figure 3e [375kB]  |
Figure 3f [370kB]  |
Figure 3g [458kB]  |
Figure 3h [379kB]  |
Figure 4 Coercivity EB v Temp [729B] |
Figure 5a Coercivity and EB vs FeMn layer thickness [238B] |
Figure 5b Magneto-optic images of mangtic domain vs IrMn layer thickness [215kB]  |
Figure 5c [365kB]  |
Figure 5d [385kB]  |
Figure 5e [401kB]  |
Figure 6 Brillouin light spectroscopy data [15kB] |