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arXiv · 1111.4340

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

Pablo Álvarez·José L. Sánchez Llamazares·Pedro Gorria·Jesús A. Blanco
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Abstract

The temperature dependence of the isothermal magnetic entropy change, ΔSM, 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 ΔSM(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 ΔSM(T) curve around room temperature range is observed, which is a key feature for an Ericsson magnetic refrigeration cycle.

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Pablo Álvarez, José L. Sánchez Llamazares, Pedro Gorria, Jesús A. Blanco. 2011-11-18. Enhanced refrigerant capacity and magnetic entropy flattening using a two-amorphous FeZrB(Cu) composite. https://doi.org/10.1063/1.3665941

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