Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1609566 | Journal of Alloys and Compounds | 2015 | 5 Pages |
Abstract
Magnetic properties and magnetocaloric effect (MCE) of HoCu0.33Ge2 and ErCu0.25Ge2 compounds have been investigated. The compounds were determined to be antiferromagnetic with the Néel temperatures TN = 9 K and 3.9 K, respectively. The critical transition magnetic fields for the metamagnetic transition from antiferromagnetic to ferromagnetic state below TN were determined to be 10 kOe for HoCu0.33Ge2 at 5 K and 6 kOe for ErCu0.25Ge2 at 2 K. Large MCE with the maximal values of magnetic entropy changes (ÎSM) as â10.2 J/kg K at 10.5 K were found in HoCu0.33Ge2 for field changes of 0-70 kOe and â10.5 J/kg K at 5.5 K in ErCu0.25Ge2 for field changes of 0-50 kOe, respectively. The large ÎSM around TN as well as no hysteresis loss made RCuxGe2 competitive candidates as low temperature magnetic refrigerant.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
R.L. Gao, Z.Y. Xu, L.C. Wang, Q.Y. Dong, Y. Zhang, F.H. Liu, Z.J. Mo, E. Niu, C.L. Fu, W. Cai, G. Chen, X.L. Deng,