-A A +A
3d-4 f intermetalic compounds with heavy rare-earth elements show first-order phase transitions in high magnetic fields due to the competition between the exchange interaction and the magnetocrystalline anisotropy. However, the microscopic picture of the field-induced noncollinear magnetic structures remains elusive. Here we report the direct experimental observation of the coherent stepwise rotation of the 3d and 4 f magnetic moments of the uniaxial hard ferrimagnet TmFe 5 Al 7 by using soft x-ray magnetic circular dichroism in pulsed magnetic fields up to 25 T. The element-and shell-selective moments show a transition from the collinear ferrimagnet toward the forced ferromagnetic state via a canted phase, which is explained by a two-sublattice model.
American Physical Society
Publication date: 
1 Jan 2020

S Yamamoto, D Gorbunov, H Akai, H Yasumura, Y Kotani, T Nakamura, T Kato, NV Mushnikov, AV Andreev, H Nojiri, J Wosnitza

Biblio References: 
Volume: 101 Pages: 174430
Physical Review B Phys Rev B