The magnetic properties research on La_(1-x)Pr_xFe_(11.206)Al_(1.794)(x=0,0.1,0.2,0.3) compounds

The magnetic properties in La1-xPrx(Fe0.862Al0.138)13(x=0,0.1,0.2,0.3) have been investigated. The compounds exhibit NaZn13-type cubic structure after annealing at 1233K for 15 days. During the heating process,they undergo the first-order magnetic phase transition process from ferromangtic to antiferromangtic. The phase transition temperature and the magnetization on the ferromagnetic phase increase with Pr content increasing. Under the field change of 2T,the maximum magnetic entropy change for La0.8Pr0.2Fe11.206Al1.794 compound is -4.21J/kgK on the heating,while it’s -4.39J/kgK on the cooling.