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Improving the refrigeration capacity of Gd-rich wires through Fe-doping.
- Source :
-
Journal of Alloys & Compounds . Jul2017, Vol. 711, p71-76. 6p. - Publication Year :
- 2017
-
Abstract
- Herein, the magnetocaloric effect (MCE) of Fe-doped Gd-rich microwires has been investigated. Experimental results indicated that this type of the microwires has entirely amorphous microstructure and smooth surface, and exhibits a relatively higher Curie temperature (∼121.8 K) as for the appropriate Fe substitution, and a remarkable and reversible MCE effect with almost no thermal or magnetic hysteresis loss. For a magnetic field change of 5 T, the isothermal magnetic entropy change (-Δ S m ) for the longitudinal direction reaches as large as 10.33 J kg −1 K −1 , besides the refrigerant capacity (RC) achieves a relatively large value of 748.22 J kg −1 . Meanwhile, the Arrott plots also indicate that the ferromagnetic-paramagnetic transition is of the second-order. Therefore, it can be concluded that the obtained Fe-doped Gd-rich wires are used as intelligent materials with enhanced MCE property for potential multifunctional applications in magnetic refrigeration field. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 711
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 122720643
- Full Text :
- https://doi.org/10.1016/j.jallcom.2017.03.363