Adiabatic magnetocaloric effect in Ni50Mn35In15 ribbons

被引：20

作者：

Alvarez-Alonso, P. ^{[1
]}

Aguilar-Ortiz, C. O. ^{[2
]}

Camarillo, J. P. ^{[2
]}

Salazar, D. ^{[3
]}

Flores-Zuniga, H. ^{[2
]}

Chernenko, V. A. ^{[1
,3
,4
]}

机构：

[1] Univ Pais Vasco UPV EHU, Dept Elect & Elect, Leioa 48940, Spain

[2] IPICYT, Div Mat Avanzados, San Luis Potosi 78216, Mexico

[3] BCMaterials, Bizkaia Sci & Technol Pk, Derio 48160, Spain

[4] Basque Fdn Sci, Ikerbasque, Bilbao 48013, Spain

来源：

APPLIED PHYSICS LETTERS | 2016年 / 109卷 / 21期

关键词：

HEUSLER ALLOYS; REFRIGERATION;

D O I：

10.1063/1.4968592

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Heusler-type Ni-Mn-based metamagnetic shape memory alloys (MetaMSMAs) are promising candidates for magnetic refrigeration. To increase heat exchange rate and efficiency of cooling, the material should have a high surface/volume ratio. In this work, the typical Ni50Mn35In15 MetaMSMA was selected to fabricate thin ribbons by melt-spinning. The characteristic transformations of the ribbons were determined by calorimetry, X-ray diffraction, scanning electron microscopy and thermomagnetization measurements. The inverse and conventional magnetocaloric effects (MCEs) associated with the martensitic transformation (MT) and the ferromagnetic transition of the austenite (TCA), respectively, were measured directly by the adiabatic method (Delta T-ad) and indirectly by estimating the magnetic entropy change from magnetization measurements. It is found that the ribbons exhibit large values of Delta T-ad = -1.1K at mu(0)Delta H = 1.9 T, in the vicinity of the MT temperature of 300K for inverse MCE, and Delta T-ad = 2.3K for conventional MCE at TCA = 309 K. This result strongly motivates further development of different MetaMSMA refrigerants shaped as ribbons. Published by AIP Publishing.

引用

页数：5

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