Noncollinear magnetic order in epitaxial thin films of the centrosymmetric MnPtGa hard magnet

Research output: Contribution to journalResearch articleContributedpeer-review


  • R. Ibarra - , Max Planck Institute for Chemical Physics of Solids, Technische Universität Dresden (Author)
  • E. Lesne - , Max Planck Institute for Chemical Physics of Solids (Author)
  • B. Ouladdiaf - , Institut Laue-Langevin (Author)
  • K. Beauvois - , Institut Laue-Langevin (Author)
  • A. S. Sukhanov - , Technische Universität Dresden (Author)
  • R. Wawrzyńczak - , Max Planck Institute for Chemical Physics of Solids (Author)
  • W. Schnelle - , Max Planck Institute for Chemical Physics of Solids (Author)
  • A. Devishvili - , Institut Laue-Langevin, Uppsala University (Author)
  • D. S. Inosov - , Technische Universität Dresden (Author)
  • C. Felser - , Max Planck Institute for Chemical Physics of Solids (Author)
  • A. Markou - , Max Planck Institute for Chemical Physics of Solids (Author)


Magnetic systems exhibiting spin-canted states have garnered much attention recently for their promising rich exotic properties driven by the real-space spin textures and competing magnetic orders. In this study, we present the structural and magnetic properties of hexagonal 60 nm MnPtGa epitaxial thin films grown by magnetron sputtering on Al2O3(0001) single-crystalline substrates. The MnPtGa film crystallizes in the centrosymmetric P63/mmc (No. 194) space group, showing perpendicular magnetic anisotropy along the c-axis, with a Curie temperature TC = 263 K. In addition, the MnPtGa film undergoes a spin reorientation transition at Tsr = 160 K. We investigated the MnPtGa magnetic ground states using single-crystal neutron diffraction. A structurally forbidden (001) magnetic Bragg reflection emerges below Tsr, indicating the existence of a spin-canted state, where the magnetic moments align ferromagnetically perpendicular to the basal plane, and a non-zero in-plane component exhibits an antiferromagnetic ordering along the c-axis. At 2 K, the refined magnetic moments of Mn are μz = 4.2(4) μB and μx = 1.5(3) μB, projected onto the c-axis and basal plane, respectively. Hence, we determined a 20° Mn spin canting angle off from the c-axis.


Original languageEnglish
Article number172403
JournalApplied physics letters
Issue number17
Publication statusPublished - 25 Apr 2022
Externally publishedYes


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