Enhanced magnetocaloric effect tuning efficiency in Ni-Mn-Sn alloy ribbons

被引：6
作者：
Quintana-Nedelcos, A. [1 ]
Sanchez Llamazares, J. L. [2 ]
Daniel-Perez, G. [3 ]
机构：
[1] Univ Sheffield, Dept Mat Sci & Engn, Sheffield S1 3JD, S Yorkshire, England
[2] Inst Potosino Invest Cient & Tecnol AC, Camino Presa San Jose 2055,Col Lomas 4, San Luis Potosi 78216, Slp, Mexico
[3] Inst Tecnol Super Irapuato ITESI, Guanajuato 36821, Mexico
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2017年 / 441卷
关键词：
Ni-Mn-Sn melt-spun ribbons; Magnetocaloric effect; Martensitic transformation; Tuning efficiency; SHAPE-MEMORY ALLOYS; MELT-SPUN RIBBONS; MARTENSITIC-TRANSFORMATION; MAGNETIC-PROPERTIES; PHASE-TRANSFORMATION; ROOM-TEMPERATURE; EXCHANGE BIAS; FIELD; NI50MN37SN13; TRANSITION;
D O I：
10.1016/j.jmmm.2017.05.070
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The present work was undertaken to investigate the effect of microstructure on the magnetic entropy change of Ni50Mn37Sn13 ribbon alloys. Unchanged sample composition and cell parameter of austenite allowed us to study strictly the correlation between the average grain size and the total magnetic field induced entropy change (Delta S-T). We found that a size-dependent martensitic transformation tuning results in a wide temperature range tailoring (> 40 K) of the magnetic entropy change with a reasonably small variation on the peak value of the total field induced entropy change. The peak values varied from 6.0 J kg(-1) K-1 to 7.7 J kg(-1) K-1 for applied fields up to 2 T. Different tuning efficiencies obtained by diverse MCE tailoring approaches are compared to highlight the advantages of the herein proposed mechanism. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：188 / 192
页数：5
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