ISIS Neutron and Muon Source Data Journal

Control of chiral magnetic textures in B20 transition metal germanide epilayers

Abstract: In order to realise the technological potential of skyrmion-based spintronics, thin film materials with high ordering temperatures and controlled skyrmion size are needed. The canonical B20 FeGe magnetically orders below about 280 K and and has a skyrmion size of ~90 nm, set by the pitch of the spin helix in the helimagnetic ground state. It is known that substituting Mn onto the Fe site (reducing the electron density) causes a change in sign of the DMI at which a divergence of the helix pitch takes place, but doping on the Co site is unexplored. In our previous beamtime we measured two Fe(1-x)Co(x)Ge epilayers, with x = 0.3 and 0.6 and saw tantalising hints of another unexpected divergence at x = 0.6. Here we propose an experiment where we will look more closely in this composition range in order to confirm the presence of this divergence and map its features more clearly.

Principal Investigator: Professor Christopher Marrows
Experimenter: Dr Satoshi Sugimoto
Experimenter: Dr Timothy Charlton
Experimenter: Dr Christy Kinane
Experimenter: Mr Charles Spencer
Experimenter: Professor Sean Langridge
Experimenter: Miss Priyasmita Sinha

DOI: 10.5286/ISIS.E.RB1510380

ISIS Experiment Number: RB1510380

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Christopher Marrows et al; (2015): Control of chiral magnetic textures in B20 transition metal germanide epilayers, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1510380

Data is released under the CC-BY-4.0 license.