Determining the magnetic structures of noncentrosymmetric EuPtAs in applied fields
We propose to probe the field-dependence of the magnetic structure of the noncentrosymmetric compound EuPtAs. Noncentrosymmetric intermetallic magnets have been found to exhibit a range of complex, non-collinear magnetic phases, including field-induced skyrmions and other magnetic states with topological spin-textures. We recently synthesized single crystals of EuPtAs, which we found undergoes two antiferromagnetic transitions in zero-field. Upon the application of a magnetic field, the system undergoes multiple transitions, giving rise to a complex field-temperature phase diagram. We recently performed single crystal neutron diffraction measurements of EuPtAs in zero-field on the D9 instrument, where we found that the magnetic structure is incommensurate along both the a- and c- axes. Here we propose to probe the magnetic structure of the field-induced magnetic phases by measuring EuPtAs on the D9 instrument in fields up to 5T along the c-axis. This will allow us to look for the presence of field-induced topological magnetic phases, and to gain an understanding of the complex magnetism in the system.
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SMIDMAN Michael; D.T. Adroja; BERECIARTUA Pablo J.; FABELO ROSA Oscar Ramon; FRANCOUAL Sonia; RODRIGUEZ VELAMAZAN Jose Alberto; SHANG Tian and XIE Wu. (2021). Determining the magnetic structures of noncentrosymmetric EuPtAs in applied fields. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-41-1095
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