Martensitic transformations and magnetic properties of Ni50−xMn37Sn13Fex(x = 0.5, 1, 1.5) melt-spun ribbons

IF 3 3区 工程技术 Q2 CHEMISTRY, ANALYTICAL
W. Younsi, S. Louidi, J. J. Suñol , A. Bouaine, J. Daza
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Abstract

The present study investigates the influence of iron (Fe) doping on the martensitic transformation and magnetic properties of Ni50−xMn37Sn13Fex(x = 0.5, 1, 1.5) magnetic shape memory alloys in ribbon form. The ribbons were prepared using arc-melting followed by melt-spinning processes and were characterized using X-ray diffraction, scanning electron microscopy, differential scanning calorimetry, and vibrating sample magnetometry. Our findings demonstrate that the addition of Fe shifts the martensitic transformation to lower temperatures and increases the Curie point of the austenitic phase, \(T_{c}^{\text A}\), leading to an enhanced magnetism in the austenitic phase. Moreover, a significant increase in the magnetization jump \((\Delta M)\) is observed, from \( 3.3\;{\text{emu\ g}}^{-1} \) for \(x=1\) to \(17 \, {\text{emu\ g}}^{-1} \) for \(x=1.5\) under a \(50 \, \text {Oe}\) applied magnetic field. The structural transformations are also found to be sensitive to the external applied magnetic field. The isothermal magnetization curves exhibit the exchange bias effect, which confirms the coexistence of antiferromagnetic and ferromagnetic coupling in the samples. Furthermore, the exchange bias effect increases with the Fe content.

Abstract Image

Ni50-xMn37Sn13Fex(x = 0.5, 1, 1.5)熔融纺丝带的马氏体转变和磁性能
本研究探讨了铁(Fe)掺杂对带状 Ni50-xMn37Sn13Fex(x = 0.5、1、1.5)磁性形状记忆合金的马氏体转变和磁性能的影响。这些带状材料是通过电弧熔化和熔融纺丝工艺制备的,并使用 X 射线衍射、扫描电子显微镜、差示扫描量热和振动样品磁力仪进行了表征。我们的研究结果表明,铁的加入使马氏体转变转移到了较低的温度,并提高了奥氏体相的居里点(T_{c}^{text A}/),从而增强了奥氏体相的磁性。此外,还观察到磁化跃迁((\Delta M)\)的显著增加,从(x=1)时的(3.3\;{text{emu\ g}}^{-1}\)增加到(x=1.5)时的(17\, {text{emu\ g}}^{-1}\),在(50\, \text {Oe}\)外加磁场下。我们还发现结构转变对外部外加磁场很敏感。等温磁化曲线表现出交换偏置效应,这证实了样品中反铁磁和铁磁耦合共存。此外,交换偏置效应随着铁含量的增加而增强。
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来源期刊
CiteScore
8.50
自引率
9.10%
发文量
577
审稿时长
3.8 months
期刊介绍: Journal of Thermal Analysis and Calorimetry is a fully peer reviewed journal publishing high quality papers covering all aspects of thermal analysis, calorimetry, and experimental thermodynamics. The journal publishes regular and special issues in twelve issues every year. The following types of papers are published: Original Research Papers, Short Communications, Reviews, Modern Instruments, Events and Book reviews. The subjects covered are: thermogravimetry, derivative thermogravimetry, differential thermal analysis, thermodilatometry, differential scanning calorimetry of all types, non-scanning calorimetry of all types, thermometry, evolved gas analysis, thermomechanical analysis, emanation thermal analysis, thermal conductivity, multiple techniques, and miscellaneous thermal methods (including the combination of the thermal method with various instrumental techniques), theory and instrumentation for thermal analysis and calorimetry.
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