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Enhanced magnetocaloric response in Cr/Mo containing Nanoperm-type amorphous alloys

 

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Opened Access Enhanced magnetocaloric response in Cr/Mo containing Nanoperm-type amorphous alloys
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Author: Franco García, Victorino
Conde Amiano, Clara Francisca
Conde Amiano, Alejandro
Kiss, László Ferenc
Department: Universidad de Sevilla. Departamento de Física de la Materia Condensada
Date: 2007-02-01
Published in: Applied Physics Letters, 90,  052509
Document type: Article
Abstract: The magnetocaloric effect of Fe76Cr8−xMoxCu1B15 (x =0,4) alloys is studied. Although the combined addition of Cr and Mo is more efficient in tuning the Curie temperature of the alloy, the Mo-free alloy presents a higher magnetocaloric response. The refrigerant capacity (RC) for the Mo-containing alloy is comparable to that of Gd5Ge1.9Si2Fe0.1 (for a field of 50 kOe, RC = 273 J kg−1 for the Mo alloy vs 240 J kg−1 for the Gd-based one), with a larger temperature span of the optimal refrigeration cycle (250 K vs 90 K, respectively). The restriction of the temperature span to 90 K gives RC = 187 J kg−1 for the Mo alloy. A master curve behavior for the magnetic entropy change is also evidenced.
Size: 601.5Kb
Format: PDF

URI: http://hdl.handle.net/11441/33293

DOI: http://dx.doi.org/10.1063/1.2437659

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