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A Finemet-type alloy as a low-cost candidate for high-temperature magnetic refrigeration

 

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Opened Access A Finemet-type alloy as a low-cost candidate for high-temperature magnetic refrigeration
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Author: Franco García, Victorino
Blázquez Gámez, Javier Sebastián
Conde Amiano, Clara Francisca
Conde Amiano, Alejandro
Department: Universidad de Sevilla. Departamento de Física de la Materia Condensada
Date: 2006
Published in: Applied Physics Letters, 88 (042505)
Document type: Article
Abstract: The refrigerant capacity RC of Fe68.5Mo5Si13.5B9Cu1Nb3 alloy is studied. For the amorphous sample, RC=63 J kg−1 for an optimal reversible cycle with cold and hot ends at 328 K and 520 K, respectively, for a maximum applied field H=15 kOe. Nanocrystallization diminishes both the peak entropy change and RC of the material. Although the measured RC is smaller than for Gd5Ge1.9Si2Fe0.1 240 J kg−1 for H=50 kOe , the Mo-Finemet alloy is more than 20 times cheaper, the applied field employed is smaller, and the temperature span of the optimal cycle is increased. This makes this alloy a promising material for high-temperature refrigeration.
Size: 686.5Kb
Format: PDF

URI: http://hdl.handle.net/11441/33351

DOI: http://dx.doi.org/10.1063/1.2167803

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