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Data for Establishing magneto-structural relationships in the solid solutions of the skyrmion hosting family of materials GaV4S8-ySey
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Štefančič, Aleš, Holt, S. J. R., Lees, Martin R., Ritter, Clemens, Gutmann, M. J., Lancaster, Tom and Balakrishnan, Geetha (2020) Data for Establishing magneto-structural relationships in the solid solutions of the skyrmion hosting family of materials GaV4S8-ySey. [Dataset]
Archive (ZIP) (Zip archive)
WRAP.zip - Published Version Available under License Creative Commons Attribution 4.0. Download (2562Kb) |
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Plain Text (Readme file)
README.txt - Published Version Available under License Creative Commons Attribution 4.0. Download (4Kb) |
Abstract
The GaV4S8-ySey (y = 0 to 8) family of materials have been synthesized in both polycrystalline and single crystal form, and their structural and magnetic properties thoroughly investigated. Each of these materials crystallizes in the F ¯43m space group at ambient temperature. However, in contrast to the end members GaV4S8 and GaV4Se8, that undergo a structural transition to the R3m space group at 42 and 41 K respectively, the solid solutions (y = 1 to 7) retain cubic symmetry down to 1.5 K. In zero applied field the end members of the family order ferromagnetically at 13 K (GaV4S8) and 18 K (GaV4Se8), while the intermediate compounds exhibit a spin-glass-like ground state. We demonstrate that the magnetic structure of GaV4S8 shows localization of spins on the V cations, indicating that a charge ordering mechanism drives the structural phase transition. We conclude that the observation of both structural and ferromagnetic transitions in the end members of the series in zero field is a prerequisite for the stabilization of a skyrmion phase, and discuss how the absence of these transitions in the y = 1 to 7 materials can be explained by their structural properties.
Item Type: | Dataset | ||||||||||||
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Subjects: | Q Science > QC Physics | ||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||
Type of Data: | Experimental data | ||||||||||||
Library of Congress Subject Headings (LCSH): | Skyrme model, Magnetic materials | ||||||||||||
Publisher: | University of Warwick, Department of Physics | ||||||||||||
Official Date: | 7 May 2020 | ||||||||||||
Dates: |
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Status: | Not Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Media of Output (format): | .xlsx .xy .cif .pdf .xye .dat .txt | ||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||
Copyright Holders: | University of Warwick | ||||||||||||
Description: | Data record consists of a zip archive, divided into subfolders according to data, an index file in raw text format and an accompanying readme file. All data are excel files. |
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Date of first compliant deposit: | 2 June 2020 | ||||||||||||
Date of first compliant Open Access: | 2 June 2020 | ||||||||||||
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