Magnetic properties and magnetocaloric effect in thiospinel Fe1-Cu Cr2S4 (x = 0.0, 0.5) compounds
Year: 2024
Type: article
Abstract: In this study, we investigate the magnetic and magnetocaloric properties of Cr-based spinel sulphides Fe 1- x Cu x Cr 2 S 4 ( x = 0.0 and x = 0.5). The magnetic transition temperature of FeCr 2 S 4 (176 K) increases to 330 K when 50 % of Fe in FeCr 2 S 4 structure is substituted with Cu. Temperature-dependent Zero-Field-Cooled (ZFC) and Field-Cooled (FC) magnetic moment measurements show a paramagnetic (PM) to ferrimagnetic (FiM) phase transition in our samples. Magnetocaloric properties were investigated through magnetization isotherm measurements. The maximum magnetic entropy change values are −2.78 J/kg. K and −2.11 J/kg. K under 5 T magnetic field, for x = 0 and x = 0.5 in Fe 1- x Cu x Cr 2 S 4 , respectively. Analysis of phenomenological universal curves and Arrott plots indicate a second-order magnetic transition for both compounds. Consequently, Fe 0.5 Cu 0.5 Cr 2 S 4 emerges as a promising candidate for magnetic refrigeration applications due to its considerable high magnetic entropy change and its proximity to room temperature transition.
Source: Physica B Condensed Matter
Authors: E. Choker, S. El Haber, F. Richomme, D. Pelloquin, A. Fnidiki, S. Hebert, J. Juraszek
Institutions: Centre National de la Recherche Scientifique, Groupe de Physique des Matériaux, Université de Rouen Normandie, Institut National des Sciences Appliquées Rouen Normandie, École Nationale Supérieure d'Ingénieurs de Caen, Normandie Université, Laboratoire de Cristallographie et Sciences des Matériaux, Université de Caen Normandie
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,160
OpenAlex ID: W4403712279