Аннотация:As is known, rare-earth metals (REMs) are promising magnetocaloric materials. The magnitude of the magnetocaloric effect (MCE) of REMs significantly depends on their purity. This paper presents results of studies of the
magnetic and magnetocaloric properties of sublimed dysprosium, prepared in the course of the present study,
with an emphasis on its impurity and structure perfection. The comprehensive analysis of the chemical
composition of sublimed dysprosium, which was performed for the first time by atom probe tomography, showed
that the metal corresponds to high-purity rare-earth metals (3 N+). The MCE effect was studied using direct
measurements of the adiabatic temperature change (ΔTad) in pulsed (up to 50 T) and steady (up to 14 T)
magnetic fields. The studies of the MCE of polycrystalline sublimed Dy by direct method showed that the high
ΔTad value for sublimed Dy are comparable with those obtained for single-crystal Dy in magnetic fields up to 5 T.
The vacuum sublimation, which is more economical and technologically advanced in contrast to single crystal
growing, can be used to create magnetocaloric REM-based materials with high MCE values.