V. V. Dorofeev, N. V. Kostyuchenko, D. I. Plokhov, I. S. Tereshina, “The features of magnetization processes and phase diagrams of rare-earth ferrimagnets RFe$_{11}$TiN$_x$ (R = Tm, $x$ = 0 and 1) with the ThMn$_{12}$ structure in ultra-high magnetic fields”, Fizika Tverdogo Tela, 2025, Volume 67, Issue 3,Pages 502

Magnetism, spintronics

The features of magnetization processes and phase diagrams of rare-earth ferrimagnets RFe$_{11}$TiN$_x$ (R = Tm, $x$ = 0 and 1) with the ThMn$_{12}$ structure in ultra-high magnetic fields

V. V. Dorofeev^ab, N. V. Kostyuchenko^bc, D. I. Plokhov^bad, I. S. Tereshina^be

^a Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow
^b P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow
^c Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Moscow Region
^d Peoples' Friendship University of Russia named after Patrice Lumumba, Moscow
^e Lomonosov Moscow State University, Faculty of Physics

Abstract: The full magnetization process of ferrimagnet TmFe$_{11}$Ti and its nitride TmFe$_{11}$TiN$_1$ in a magnetic field with induction up to 100 T is investigated. It is shown that the external magnetic field induces reorientation of the iron and thulium sublattices, leading to the implementation of noncollinear and ferromagnetic phases in an ultra-high field. Based on the available experimental data, estimates are given of the effective fields of intersublattice exchange and constants of magnetocrystalline anisotropy. Phase diagrams in the variables “field vs temperature” are obtained.

Keywords: rare earth intermetallics, ultra-high magnetic fields, magnetic phase transitions, full magnetization process.

Received: 16.03.2025
Revised: 23.03.2025
Accepted: 24.03.2025

DOI: 10.61011/FTT.2025.03.60262.52-25