Determining the magnetic structures of noncentrosymmetric EuPtAs
We propose to probe the magnetic structure of the noncentrosymmetric compound EuPtAs, in the zero-field and field-induced magnetic phases. Noncentrosymmetric intermetallic lanthanide materials have been found to exhibit a range of complex, non-collinear magnetic phases, due to the interplay of the Ruderman-Kittel-Kasuya-Yosida and Dzyaloshinskii-Moriya interactions. We recently synthesized single crystals of EuPtAs, which we found undergoes two antiferromagnetic transitions in zero-field below TN1=15 K and TN2=7.3 K. Upon the application of a magnetic field, the system undergoes multiple transitions, giving rise to a complex field-temperature phase diagram. We propose to determine the magnetic structure across this phase diagram by performing neutron diffraction measurements on the D9 instrument, at temperatures down to 2K and in fields of up to 5T along the c-axis. This will allow us to gain an understanding of the complex magnetism and underlying interactions in the system.
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SMIDMAN Michael; D.T. Adroja; FABELO ROSA Oscar Ramon; RODRIGUEZ VELAMAZAN Jose Alberto; SHANG Tian and XIE Wu. (2020). Determining the magnetic structures of noncentrosymmetric EuPtAs. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-41-1011
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