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Microscopic nature of the first-order field-induced phase transition in the strongly anisotropic ferrimagnet HoFe.sub.5./sub.Al.sub.7./sub.
- 1.0520931 - FZÚ 2020 RIV US eng J - Journal Article
Gorbunov, D.I. - Strohm, C. - Henriques, Margarida Isabel Sousa - van der Linden, P. - Pedersen, B. - Mushnikov, N. V. - Rosenfeld, E.V. - Petříček, Václav - Mathon, O. - Wosnitza, J. - Andreev, Alexander V.
Microscopic nature of the first-order field-induced phase transition in the strongly anisotropic ferrimagnet HoFe5Al7.
Physical Review Letters. Roč. 122, č. 12 (2019), s. 1-6, č. článku 127205. ISSN 0031-9007. E-ISSN 1079-7114
R&D Projects: GA ČR(CZ) GA19-00925S; GA ČR GA16-03593S; GA ČR(CZ) GJ19-07931Y
Institutional support: RVO:68378271
Keywords : ferrimagnetism * exchange interactions * magnetic anisotropy * field-induced transition
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 8.385, year: 2019
Method of publishing: Limited access
https://doi.org/10.1103/physrevlett.122.127205
We report on x-ray magnetic circular dichroism experiments in pulsed fields up to 30 T to follow the rotations of individual magnetic moments through the field-induced phase transition in the ferrimagnet HoFe5Al7. Near the ground state, we observe simultaneous stepwise rotations of the Ho and Fe moments and explain them using a two-sublattice model for an anisotropic ferrimagnet with weak intersublattice exchange interactions. Near the compensation point, we find two phase transitions. The additional magnetization jump reflects the fact that the Ho moment is no longer rigid as the applied field acts against the intersublattice exchange field.
Permanent Link: http://hdl.handle.net/11104/0305609
Number of the records: 1