https://doi.org/10.1140/epjp/s13360-023-03996-1
Regular Article
Investigation of the intrinsic magnetic properties of GdCo4B single crystal: determination of the magnetocrystalline anisotropy from the first-order magnetization processes
1
Helmholtz-Zentrum Dresden-Rossendorf, Institute of Resource Ecology, 01314, Dresden, Germany
2
Rossendorf Beamline (BM20), European Synchrotron Radiation Facility, 38043, Grenoble, France
3
IM2NP, UMR CNRS 7334, Aix-Marseille Université, 13397, Marseille Cédex 20, France
4
Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON, Canada
5
Institut Néel, CNRS, BP166X, Université Grenoble Alpes, 38042, Grenoble Cédex 9, France
Received:
29
November
2022
Accepted:
4
April
2023
Published online:
6
May
2023
We report on the intrinsic magnetic properties of a GdCo4B single crystal as derived from magnetization measurements. The occurrence of a first-order magnetization process (FOMP) in a magnetic field applied perpendicularly to the easy magnetization direction provides an opportunity to determine the anisotropy parameters K1 and K2. To this end, the theoretical approach proposed previously for easy-plane magnets has been adapted for the case of easy-axis compounds exhibiting a FOMP. The obtained anisotropy parameters of GdCo4B are compared with the values deduced by other classical techniques. The presence of a compensation point in the thermal dependence of the spontaneous magnetization has enabled the determination of the exchange field on Gd, Bex = 131 T, which is in good agreement with inelastic neutron scattering results published earlier. Influence of the applied pressure on the anisotropy parameters is quantified using the pressure dependence of the FOMP, revealing a significant sensitivity of the anisotropy parameters to pressure.
© The Author(s) 2023
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