采用电弧熔炼和真空电磁感应甩带方法制备了Fe91-xLaxZr9(x=1,3,5,10)系列非晶合金,研究了该非晶合金的磁性和磁热效应.X-射线衍射结果显示,样品的形成主要为非晶态合金.非晶态Fe81La10Zr9合金的磁熵变随温度变化的曲线表明,外场为1.5T时样品最大等温磁熵变为0.8J/(kg.K),半峰宽对应的温度变化范围为245~285K.
In this article,we investigated the preparation of amorphous Fe91-xLaxZr9(x=1,3,5,10) alloys and their magnetic and magnetocaloric properties.The samples of the amorphous alloys were prepared by using arc melting and melt spinning methods.X-ray diffraction shows that the samples form in amorphous state.The isothermal magnetic entropy change of Fe81La10Zr9 alloy was determined from magnetization data basis on Maxwell relation.The result shows that the maximal magnetic entropy change is 0.8 J/(kg·K).The half-peak wide temperature span is from 245 K to 285 K.