熔融提取的Mn1的磁性和磁热性质。26Fe0.60P0.48Si0.52
Magnetic and magnetocaloric properties of melt-extracted Mn1.26Fe0.60P0.48Si0.52 microwires
摘要：
采用熔体萃取法首次制备了Mn 1.26Fe 0.60P 0.48Si 0.52多晶微丝，并对其磁性和磁热性能进行了系统的研究。结构分析表明，所制备的纳米线为Fe 2 P型六方相，成分分布均匀。磁性测量表明，在142 K时，该微线发生了一次弱的一级磁相变。当磁场变化为5 T时，最大磁熵变为4.64Jkg-1 K-1。这些低成本的Mn1.26Fe0.60P0.48Si0.52微丝在液氮温度范围内的主动磁制冷是有前途的。
英文摘要：
The polycrystalline Mn1.26Fe0.60P0.48Si0.52 microwires were successfully fabricated for the first time by the melt-extraction technique, and their magnetic and magnetocaloric properties were investigated systematically. The structural analysis shows that the microwires possess a hexagonal phase with Fe2P type, with a homogeneous composition distribution. Magnetometry measurements show that the microwires undergo a weak first-order magnetic phase transition at a temperature of 142 K. The maximum magnetic entropy change of the microwires reaches 4.64 Jkg-1K-1 for a field change of 5 T. These low-cost Mn1.26Fe0.60P0.48Si0.52 microwires are promising for active magnetic refrigeration in the liquid nitrogen temperature range.
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