Magnetocaloric Properties and Critical Behaviour of the Sm[sub.2]Ni[sub.17] Compound

This paper presents a detailed study in the critical region around the Curie temperature to determine the universality class of the Sm[sub.2]Ni[sub.17] intermetallic compound. The magnetocaloric effect has been studied on the basis of experimental measurements of magnetization. Maxwell's relati...

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Bibliographic Details
Published in:Applied sciences 2023-05, Vol.13 (11)
Main Authors: Horcheni, Jihed, Nouri, Kamal, Jaballah, Hamdi, Bessais, Lotfi, Dhahri, Essebti, Jemmali, Mosbah
Format: Article
Language:English
Subjects:
Ferromagnetism
Magnetization
Online Access:Get full text
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Summary:This paper presents a detailed study in the critical region around the Curie temperature to determine the universality class of the Sm[sub.2]Ni[sub.17] 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 Sm[sub.2]Ni[sub.17] 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.
ISSN:2076-3417
2076-3417
DOI:10.3390/app13116575