Giant magnetocaloric effect in nanostructured Fe-Co-P amorphous alloys enabled through pulse electrodeposition
Giant magnetocaloric effect in nanostructured Fe-Co-P amorphous alloys enabled through pulse electrodeposition
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通过脉冲电沉积实现纳米结构 Fe-Co-P 非晶合金的巨磁热效应
DOI：
10.1088/1361-6528/ab9971
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发表时间：
2020-06
期刊：
影响因子：
3.5
通讯作者：
Guang-ping Zheng
中科院分区：
文献类型：
--
作者：
Jun-ye Cheng;Tian Li;Sana Ullah;Feng Luo;Hao Wang;Ming Yan;Guang-ping Zheng
在这项工作中，发现电沉积制备的非晶Fe-Co-P薄膜具有致密的非晶颗粒微结构。采用脉冲电沉积合成方法，在非晶合金薄膜中获得了含有纳米级晶粒的复杂微观结构。纳米结构的Fe-Co-P非晶合金与迄今为止报道的其他铁基软磁非晶合金相比，具有优越的软磁和磁热性能。在室温下，样品的矫顽力场可小至1.6 Oe。利用磁熵变化|∆SM|对三元非晶合金的磁热效应进行了研究。当外加磁场为10 kOe时，|∆SM|值高达1.846 J kg−1 K−1。在90k的温度范围内，样品的制冷剂容量可高达118.64 J kg−1。讨论了Fe-Co-P非晶合金中纳米结构的巨型MCE。
In this work, amorphous Fe-Co-P films prepared by electrodeposition are found to exhibit dense microstructures with amorphous grains. Through a pulse electrodeposition synthesis route, complex microstructures containing nano-sized grains are obtained in the amorphous alloy films. The nanostructured Fe-Co-P amorphous alloys show superior soft magnetic and magnetocaloric properties as compared with those of other iron-based soft magnetic amorphous alloys reported to date. The coercive field of samples can be as small as 1.6 Oe at room temperature. The magnetocaloric effect (MCE) of the ternary amorphous alloys has been investigated by evaluating the magnetic entropy changes, |∆SM|, from their temperature-dependent magnetization behaviors. The |∆SM| values are as high as 1.846 J kg−1 K−1 with an applied magnetic field of 10 kOe. With a temperature span of 90 K, the refrigerant capacity of samples can be as high as 118.64 J kg−1. The nanostructure enabled giant MCE in Fe-Co-P amorphous alloys is discussed.
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