Magnetocaloric Properties and Critical Behaviour of the Sm2Ni17 Compound

This paper presents a detailed study in the critical region around the Curie temperature to determine the universality class of the Sm2Ni17 intermetallic compound. The magnetocaloric effect has been studied on the basis of experimental measurements of magnetization. Maxwell's relation and a phenomenological model are employed to find the change in magnetic entropy. The compound Sm2Ni17 presents a variation in entropy with a moderate maximum and a wide range of operating temperatures. Numerous approaches have been used to explore the spontaneous magnetization behaviour and inverse of the susceptibility, including the modified Arrott technique, the Kouvel-Fisher approach, and the fitting of the critical isotherm. The scaling hypothesis has been used to confirm the validity and interdependence of the critical exponents associated with these phenomena.

Automated summary

This paper presents a detailed study of the Sm2Ni17 intermetallic compound near its Curie temperature to determine its universality class. The magnetocaloric effect is investigated based on experimental measurements of magnetization, using Maxwell's relation and a phenomenological model to determine the change in magnetic entropy. The compound exhibits a moderate maximum in entropy and a wide range of operating temperatures. Various approaches, including the modified Arrott technique, the Kouvel-Fisher approach, and fitting of the critical isotherm, are employed to explore the spontaneous magnetization behavior and inverse of the susceptibility. The scaling hypothesis is used to confirm the validity and interdependence of the critical exponents associated with these phenomena.