Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1611544 | Journal of Alloys and Compounds | 2014 | 5 Pages |
Abstract
Magnetic and magnetocaloric properties of binary equiatomic alloys RAl (RÂ =Â Ho and Er) are investigated in this work. HoAl compound undergoes antiferromagnetic (AFM)-ferromagnetic (FM) transition at T1Â =Â 13Â K, and FM-paramagnetic (PM) transition at the Curie temperature TCÂ =Â 20Â K, with temperature increasing. ErAl compound exhibits AFM-PM transition at the Néel temperature TNÂ =Â 9Â K. The maximal values of magnetic entropy change (ÎSM) are â22.5Â JÂ kgâ1Â Kâ1 for HoAl and â16.4Â JÂ kgâ1Â Kâ1 for ErAl for a magnetic field change of 0-5Â T. The values of refrigerant capacity (RC) are 379.5Â JÂ kgâ1 and 259.7Â JÂ kgâ1 for HoAl and ErAl respectively. The large magnetocaloric effect makes RAl (RÂ =Â Ho and Er) compounds promising candidates for low-temperature magnetic refrigerants.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
L.H. Yang, H. Zhang, F.X. Hu, J.R. Sun, L.Q. Pan, B.G. Shen,