A Finemet-type alloy as a low-cost candidate for high-temperature magnetic refrigeration -: art. no. 042505

被引:113
作者
Franco, V [1 ]
Blázquez, JS [1 ]
Conde, CF [1 ]
Conde, A [1 ]
机构
[1] Univ Seville, CSIC, ICMSE, Dept Fis Mat Condensada, E-41080 Seville, Spain
关键词
D O I
10.1063/1.2167803
中图分类号
O59 [应用物理学];
学科分类号
摘要
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.
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页码:1 / 3
页数:3
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