This study investigates the crystal structural, magnetic properties, and phase transformation of melt-spun Fe-Mn-Ga alloys. We found that melt-spun FeMnGa alloy crystallizes into a phase, which exhibits ferromagnetism at room temperature, and undergoes a magnetic transition at 257 K. On the other hand, melt-spun FeMnGa, FeMnGa and FeMnGa alloys exhibit a single body-centered cubic phase, with the latter two alloys undergo martensitic transformation during cooling. Additionally, a magnetic-field-induced martensitic transformation was observed within the temperature range of 180 to 160 K. Notably, the martensitic transformation temperatures of these two melt-spun Fe-Mn-Ga alloys are significantly lower compared to other fabrication methods, potentially attributed to the atomic disorder, microstructure and internal stresses that arise during the melt-spun fabrication process. These findings expand the available preparation methods for Fe-Mn-Ga alloys and offer new possibilities for future applications.

中文翻译：

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熔纺 Fe-Mn-Ga 合金中磁场诱导马氏体相变的实现

本研究研究了熔纺 Fe-Mn-Ga 合金的晶体结构、磁性能和相变。我们发现熔纺 FeMnGa 合金结晶成一个相，在室温下表现出铁磁性，并在 257 K 时经历磁转变。另一方面，熔纺 FeMnGa、FeMnGa 和 FeMnGa 合金表现出单一体心立方相，后两种合金在冷却过程中发生马氏体转变。此外，在 180 至 160 K 的温度范围内观察到磁场诱发的马氏体转变。值得注意的是，这两种熔纺 Fe-Mn-Ga 合金的马氏体转变温度明显低于其他制造方法，可能归因于熔纺制造过程中产生的原子无序、微观结构和内应力。这些发现扩展了 Fe-Mn-Ga 合金的可用制备方法，并为未来的应用提供了新的可能性。