Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 533, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jmmm.2021.168021
Keywords
Mn-Fe-Ni-Si-Al alloys; Melt spun ribbons; Magnetostructural martensitic transformation; Giant magnetocaloric effect materials; Magnetic hysteresis loss
Funding
- CONACYT, Mexico [A1-S-37066]
- Laboratorio Nacional de Nanociencias y Nanotecnologia (LINAN, IPICyT)
- CONACYT [861512]
- DMCU-UACJ
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Melt-spun ribbons of the quinary alloy underwent a martensitic-like magnetostructural transformation post-annealing at temperatures between 1073 K and 1223 K, showing a lower maximum magnetic field-induced entropy change but a broader working temperature range. The samples also exhibited relatively low magnetic hysteresis loss across the martensitic transformation.
Were fabricated melt-spun ribbons of the quinary alloy Mn0.5Fe0.5NiSi0.945Al0.055. After an annealing time of 4 h at temperatures between 1073 K and 1223 K, samples underwent a martensitic-like magnetostructural transformation around room temperature from a paramagnetic Ni2In-type hexagonal structure to a ferromagnetic TiNiSi-type one. The phase transformation practically remained unchanged with the annealing temperature, whereas the first cooling process induced a massive cracking in the samples. In comparison to the reported in literature for bulk alloys, the melt-spun ribbons showed a lower maximum magnetic field-induced entropy change but a well-broader working temperature range. A relatively low magnetic hysteresis loss was obtained across the martensitic transformation.
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