论文标题
纳米晶/无定形GD $ _3 $ ni/ gd $ _ {65} $ ni $ _ {35} $复合微波炉
The large magnetocaloric effect and refrigerant capacity in nanocrystalline/ amorphous Gd$_3$Ni/Gd$_{65}$Ni$_{35}$ composite microwires
论文作者
论文摘要
我们报告了一类新型的纳米晶/无定形GD $ _3 $ ni/gd $ _ {65} $ ni $ _ {35} $复合微波炉，该元件是由熔体攻击直接通过控制固化而直接创建的。 X射线衍射（XRD）和透射电子显微镜（TEM）证实了这些电线中双相纳米晶体/无定形结构的形成。磁性和磁联性实验表明磁性熵变化（ - $δ$ sm〜9.64 j/kg k），近似于120 K的库里温度周围的较大的制冷剂容量（RC〜742.1 j/kg），对于5 t的磁场变化，这些值是较大的，因为这些值与其他材料相比，其较大的元素是较大的，而不是其他材料，而不是其他材料，而不是其他材料，则是较大的液体元素。 范围。
We report on a novel class of nanocrystalline/amorphous Gd$_3$Ni/Gd$_{65}$Ni$_{35}$ composite microwires, which was created directly by melt-extraction through controlled solidification. X-ray diffraction (XRD) and transmission electron microscopy (TEM) confirmed the formation of a biphase nanocrystalline/amorphous structure in these wires. Magnetic and magnetocaloric experiments indicate the large magnetic entropy change (-$Δ$SM ~9.64 J/kg K) and the large refrigerant capacity (RC ~742.1 J/kg) around the Curie temperature of ~120 K for a field change of 5 T. These values are ~1.5 times larger relative to its bulk counterpart, and are superior to other candidate materials being considered for active magnetic refrigeration in the liquid nitrogen temperature range.
