Papers by Keyword: Rare-Earth Compound

Abstract: The paper presents the investigation of GdNiH_3.2 and TbNiH_3.4 hydrides magnetic transitions and magnetocaloric properties. The isothermal magnetization data in the fields up to 5T are obtained for GdNi and TbNi compounds and their hydrides and the values of magnetic entropy change are calculated. The maximum values of magnetic entropy change ΔS_M in GdNiH_3.2 and TbNiH_3.4 are extremely large. It is shown that the hydrogenation shifts ΔS_M(T) maximum to lower temperatures.

Abstract: An experimental method of X-ray magnetic diffraction was applied to the ferromagnetic rare-earth compound CeRh₃B₂, and its spin and orbital magnetic form factors were measured independently for the first time. Our curve-fitting analysis shows that the orbital magnetic form factor is reproduced by the calculated atomic-model form factor of Ce-4f electrons under the dipole approximation. The comparison of the sum of form factors and the total magnetic form factor measured by the polarized neutron diffraction reveals anisotropic distribution of the magnetic moment in real space.