Magnetic and magnetocaloric properties of Gd2In0.8X0.2 compounds (X=Al, Ga, Sn, Pb)

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:399

Article

Tence, Sophie^1,2  Chevalier, Bernard^1,2 

[1] CNRS, ICMCB, UPR 9048, F-33600 Pessac, France

[2] Univ Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, France

关键词: Intermetallic synthesis;    Metamagnetisin;    Ferromagnetism;    Magnetocaloric properties;   

DOI  :  10.1016/j.jmmm.2015.09.058

来源: Elsevier

【 摘 要 】

We show that it is possible to replace in Gd2In some amount of In by X=Al, Ga, Sn and Pb to obtain Gd2In1-xXx, samples after melting. The magnetic and magnetocaloric properties of the Gd2In0.8X0.2 intermetallic compounds have been investigated through dc magnetization measurements. We evidence that the substitution of Al and Ga for In barely changes the Curie temperature T-c but decreases the second magnetic transition temperature T' which corresponds to the transition from a ferromagnetic to an antiferromagnetic state. On the other hand, the substitution of Sn and Pb for In strongly increases T-c and changes the nature or even suppresses the transition at lower temperature. This magnetic behavior gives rise to an interesting way to tune the Curie temperature near room temperature without diluting he Gd network and thus to modify the magnetocaloric effect in Gd2In1-xXx compounds. (C) 2015 Elsevier B.V. All rights reserved

【 授权许可】

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