Magnetic textures in single crystals of Ni<sub>1-x</sub>Fe<sub>x</sub>Br<sub>2</sub>
ORAL
Abstract
Recently, frustrated systems with finite easy axis anisotropy have been proposed as a route to realize topological spin textures. In this context, Ni1-xFexBr2 has been predicted to host a field-induced skyrmion phase. This presentation will discuss the magnetic properties of Ni1-xFexBr2 single crystals and the magnetic field-temperature phase diagram. NiBr2 crystallizes in the centrosymmetric CdCl2 structure type. It exhibits a commensurate antiferromagnetic phase below TN = 48 K and an incommensurate helimagnetic phase below TIC = 22 K, both with easy plane anisotropy. The helimagnetic structure of Ni1-xFexBr2 is tuned as a function of composition and applied magnetic field, as demonstrated using bulk measurements and neutron scattering. A change in magnetic anisotropy from easy plane to easy axis is observed around x = 0.07, which is expected as a key feature to realize a skyrmion phase in this system.
*U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division
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Presenters
Binod Rai
Materials Science and Technology Division, Oak Ridge National Laboratory
Oak Ridge National Laboratory
Authors
Binod Rai
Materials Science and Technology Division, Oak Ridge National Laboratory
Oak Ridge National Laboratory
Hasitha Suriya Arachchige
Physics and Astronomy, The University of Tennessee
Department of Physics & Astronomy, University of Tennessee, Knoxville
Department of Physics, University of Tennessee
University of Tennessee
Department of Physics and Astronomy, The University of Tennessee
Ganesh Pokharel
Physics, University of Tennessee
Physics and Astronomy, The University of Tennessee
Department of Physics & Astronomy, University of Tennessee, Knoxville
University of Tennessee
Department of Physics and Astronomy, The University of Tennessee
University of Tennessee, Knoxville
Yaohua Liu
Neutron Scattering Division, Oak Ridge National Laboratory
Oak Ridge National Lab
Oak Ridge National Laboratory
Shizeng Lin
Theoretical Division, Los Alamos National Laboratory
Los Alamos Natl Lab
Theoretical Division, T-4, Los Alamos National Laboratory
Los Alamos National Laboratory
Theoretical Division, Los Alamos National Lab
Theoretical Division, T-4 and CNLS, Los Alamos National Laboratory
Los Alamos National Lab
Cristian Batista
Physics and Astronomy, The University of Tennessee
Neutron Scattering Division and Shull-Wollan Center, Oak Ridge National Laboratory
Department of Physics and Astronomy, The University of Tennessee
University of Tennessee, Knoxville
Department of Physics and Astronomy, University of Tennessee, Knoxville
Department of Physics and Astronomy, University of Tennessee
David Mandrus
Physics, University of Tennessee
Materials Science and Engineering, The University of Tennessee
Department of Materials Science & Engineering, University of Tennessee, Knoxville
The University of Tennesse, Knoxville
University of Tennessee
Department of Physics and Astronomy, University of Tennessee
Oak Ridge National Laboratory
Department of Materials Science and Engineering, University of Tennessee Knoxville
Department of Materials Science and Engineering, University of Tennessee
University of Tennessee, Knoxville
Material Science and Technology Division, Oak Ridge National Laboratory
Material Science and Technology Division, Oak Ridge National Lab
Andrew D Christianson
Materials Science & Technology Division, Oak Ridge National Laboratory
Materials Science and Technology Division, Oak Ridge National Laboratory
Oak Ridge National Lab
Materials Science and Technology Division, Oak Ridge National Lab
Materials Science and Technology Division, OakRidge National Laboratory
Andrew May
Materials Science and Technology Division, Oak Ridge National Laboratory
Materials Science & Technology Division, Oak Ridge National Laboratory
