Influence of Co and Ni addition on the magnetocaloric effect in Fe88-2xCoxNixZr7B4Cu1 soft magnetic amorphous alloys

被引：110

作者：

Caballero-Flores, R. ^{[1
]}

Franco, V. ^{[1
]}

Conde, A. ^{[1
]}

Knipling, K. E. ^{[2
]}

Willard, M. A. ^{[2
]}

机构：

[1] Univ Seville, CSIC, Dpto Fis Mat Condensada, ICMSE, E-41080 Seville, Spain

[2] USN, Multifunct Mat Branch, Res Lab, Washington, DC 20375 USA

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 18期

关键词：

amorphous magnetic materials; boron alloys; cobalt alloys; copper alloys; Curie temperature; entropy; iron alloys; magnetocaloric effects; nickel alloys; soft magnetic materials; zirconium alloys; ENTROPY CHANGE; PHASE;

D O I：

10.1063/1.3427439

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied the magnetocaloric effect in a series of Fe88-2xCoxNixZr7B4Cu1 alloys. The partial substitution of Fe by Co and Ni leads to a monotonic increase in the Curie temperature (T-C) of the alloys from 287 K for x=0 to 626 K for x=11. The maximum magnetic entropy change (Delta S-pk(M)) at an applied field of 1.5 T, shows a value of 1.98 J K-1 kg(-1) for x=8.25. The refrigerant capacity (RC) has maximum values near 166 J kg(-1) (for x=0 and 2.75). These values place the present series of alloys among the best magnetic refrigerant materials, with an RC similar to 40% larger than Gd5Si2Ge1.9Fe0.1 and similar to 15% larger than Fe-based amorphous alloys. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3427439]

引用

页数：3

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