Enhanced refrigerant capacity and magnetic entropy flattening using a two-amorphous FeZrB(Cu) composite

Details Enhanced refrigerant capacity and magnetic entropy flattening using a two-amorphous FeZrB(Cu) composite Enhanced refrigerant capacity and magnetic entropy flattening using a two-amorphous FeZrB(Cu) composite

2011-11-18

arxiv.org/abs/1111.4340v1

Appl. Phys. Lett. 99, 232501 (2011)

Physics

Condensed Matter

Materials Science

Regular paper with 11 pages in the pre-print, 3 pages after publishing. The following article has been accepted by Applied Phy

Scientific paper

10.1063/1.3665941

The temperature dependence of the isothermal magnetic entropy change, {\Delta}SM, and the magnetic field dependence of the refrigerant capacity, RC, have been investigated in a composite system xA+(1-x)B, based on Fe87Zr6B6Cu1 (A) and Fe90Zr8B2 (B) amorphous ribbons. Under a magnetic field change of 2 T the maximum improvement of the full-width at half maximum of {\Delta}SM(T) curve (47 and 29 %) and the RC (18 and 23 %), in comparison with those of the individual alloys (A and B), is observed for x \approx 0.5. Moreover, a flattening over 80 K in the {\Delta}SM(T) curve around room temperature range is observed, which is a key feature for an Ericsson magnetic refrigeration cycle.

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