Crystal and magnetic structures investigation on antiferromagnetic spintronic material - tetragonal Cu1+xMn1-xAs
The development of antiferromagnetic spintronics is still in its infancy but thin-film CuMnAs has already received much interest due to its high Néel temperature (TN~480 K) and the ability to reorient the magnetic moments using current pulses. Specific symmetry properties of the tetragonal polymorph make it the most interesting for spintronic applications but due to a lack of high quality bulk samples, studies have been limited to thin films. Our recent synthesis efforts have now afforded bulk samples of the tetragonal phase, with a range of compositions in the series Cu1+xMn1-xAs. We have found that stoichiometry changes tune the Néel temperature as well as crystallographic and magnetic structure of Cu1+xMn1-xAs (significantly). We propose to use powder neutron diffraction with the D20 diffractometer to perform high quality refinements of both across this series of compositions.
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KLICPERA Milan; Ross Colman; Thomas C. Hansen and UHLIROVA Klara. (2019). Crystal and magnetic structures investigation on antiferromagnetic spintronic material - tetragonal Cu1+xMn1-xAs. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2656
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