The Sucksmith-Thompson method is a widespread technique for the accurate evaluation of magnetocrystalline anisotropy constants K1 and K2 of a single crystal with easy magnetization axis or basal plane type magnetic anisotropy. In this work, a generalized form of the method is represented. It takes into account several magnetization process features: spontaneous magnetization anisotropy, high-field differential susceptibility (paramagnetic process), and stray fields in terms of the demagnetizing factor. Corrected anisotropy field expressions for both magnetic anisotropy types are also established herein. The modified approach was verified by magnetization measurements of single crystalline LaCo5 and YFe3.

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Structural features, magnetic properties and magnetocaloric effect of pure Gd ribbons prepared by melt spinning method were carefully analyzed. The X-ray data show that there is no change in the cell parameters for the samples prepared at different copper-wheel speed. Average size of nanocrystalline grains was close to 30 nm. As compared to the bulk Gd sample, the Curie temperature was the same in the case of the ribbons. From the magnetic isotherms, the magnetic entropy change was derived using the Maxwell relation follow the standard procedure. Its value was comparable with the value of the bulk Gd. Good mechanical properties of fabricated Gd ribbon and their flexibility can be useful for design of flexible refrigerating elements.

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At ambient pressure, the Fe0.49(Rh1-xPdx)0.51 alloys with the Pd concentration within 0 < x < 0.12 exhibit an antiferromagnetic (AF) state below the critical temperature Tt, while above x = 0.12 the alloys have a ferromagnetic (F) order up to the Curie temperature TC 650 K. The temperature and field dependences of the magnetization in the alloys with x = 0.08; 0.13 were investigated under hydrostatic pressure up to 10 kbar. The application of pressure of about 8.5 kbar is observed to induce the F-AF phase transition in the ferromagnetically ordered compound with x = 0.13. The AF-F-AF phase evolution was revealed with increasing pressure in the AF-ordered alloy with x = 0.08.