Titre : Direct and inverse magnetocaloric effect in half-doped La<sub>0,5</sub>Ca<sub>0,5</sub>MnO<sub>3</sub> and Pr<sub>0,5</sub>Sr<sub>0,5</sub>MnO<sub>3</sub> 

Auteurs : Akram Krichene
, Wahiba Boujelben,  

Revue : Entropy: Thermodynamics – Energy – Environment – Economy  

Numéro : Special issue IEES 

Volume : 5 

Date : 2024/01/26 

DOI : 10.21494/ISTE.OP.2024.1076 

ISSN : 2634-1476 

Résumé : In this communication, we report the magnetic and magnetocaloric study of Pr0.5Sr0.5MnO3 and La0.5Ca0.5MnO3 compounds prepared by solid-state reaction at high temperature. The temperature dependence of magnetization indicates that each sample displays two distinct magnetic transitions: when decreasing temperature, each sample undergoes a paramagnetic-ferromagnetic transition followed by a ferromagnetic-antiferromagnetic transition. The magnetocaloric study indicates that both samples are the seat of direct (near the paramagnetic-ferromagnetic transition) and inverse (near the ferromagnetic-antiferromagnetic transition) magnetocaloric effect. The inverse magnetocaloric effect is more important for Pr0.5Sr0.5MnO3 compound due to the absence of magnetic phase separation. 

Éditeur : ISTE OpenScience