期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 731, 期 -, 页码 678-684出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.10.063
关键词
As-spun ribbons; Magnetocaloric effects; Martensitic transition
资金
- Office of Basic Energy Sciences, Material Science Division of the U.S. Department of Energy, DOE [DE-FG02-06ER46291, DE-FG02-13ER46946]
- Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnologia (LINAN, IPICyT)
- CONACYT, Mexico [CB-2012-01-183770, CB-2012-01-176705]
The magnetic, structural, thermal, and magnetocaloric properties of Ni50Mn35In14.5B0.5 melt-spun ribbons have been studied through X-ray diffraction (XRD), differential scanning calorimetry, and magnetization measurements. A comparison of magnetic properties and magnetocaloric effects (MCE) of Ni50Mn35In14.5B0.5 melt-spun and annealed ribbons to its bulk form has been shown in detail. We have observed that a short time vacuum annealing (1073 K-10 min) on ribbon sample can restore the properties of the bulk material. Significant changes in magnetic and magnetocaloric properties have been observed between Ni50Mn35In14.5B0.5 ribbons in the as-solidified state and after thermal annealing. The MCE parameters of annealed ribbons were found to be comparable to those observed in the bulk alloy. The maximum value of relative cooling power of 150 J/kg for a magnetic field change of 5 T was found at the martensitic transition for annealed ribbons. The working temperature range of the magnetic entropy change (Delta S-M) for annealed ribbons has been significantly enlarged in comparison to melt-spun ribbons. The role of the magnetic and structural changes on the transition temperatures of the ribbons is discussed. (C) 2017 Elsevier B.V. All rights reserved.
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