Gd3+xAl2-x系合金的晶体结构和磁熵研究
The Study of structure and magnetic entropy in Gd3+xAl2-x
生利英1，徐来自2，黄焦宏2
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作者单位：1. 包头职业技术学院材料系，内蒙古 包头 014030；2.包头稀土研究院，内蒙古 包头 014010
中文关键字：Gd3+xAl2-x；居里温度；磁熵；结构
英文关键字：Gd3+xAl2-x; Cure temperature; magnetic entropy; structure
中文摘要：采用真空高频磁悬浮炉制备出一系列的Gd3+xAl2-x（x=0，0.1，0.2，0.3）合金。通过Gd对Al的部分替代，研究了Gd元素微量替代对Gd3Al2合金结构和磁熵的影响。实验结果表明，Gd3+xAl2-x系合金的结构与Gd3Al2相同；随着Gd含量的增加，Gd3+xAl2-x系合金的居里温度和磁熵发生了变化。说明Gd对Al的部分替代改变了Gd3Al2合金的磁热效应。
英文摘要：A series of Gd3+xAl2-x（x=0，0.1，0.2，0.3）alloys were prepared in a high-frequency floating furnace. The effect of minor substitution of Al by Gd on the structure and magnetic entropy of Gd3Al2 alloy was investigated. As a result , the structure of Gd3+xAl2-x alloys is the same of Gd3Al2 alloy ，the Cure temperature and magnetic entropy of Gd3+xAl2-x alloys change with increasing content for Gd . It was revealed that minor addition of Gd can change the magnetocaloric effects of Gd3Al2 alloy.