摘要
为了寻找合适的室温磁致冷材料,通过高频磁悬浮炉制备了Mn5Ge3-xSbx系列合金,利用X光粉末衍射技术确定其结构 ,并在 1 3Ｔ的磁场下直接测量了其磁热效应 结果表明 ,Ｍｎ5Ｇｅ3 -ｘＳｂｘ 系列合金在低磁场下的磁热效应最大仅为 1 3 4Ｋ ;Ｓｂ的含量对居里温度ＴＣ
The Mn5Ge3-xSbx alloys were prepared in a highfrequency floating furnace and the structures of the samples were examined by XRD method for searching an appropriate magnetic refrigeration material at room temperature. The magnetocaloric effects of the alloys were measured directly using the selfmade ΔTadT curve measurement device at the magnetic field of 1.3 T. The experimental results show that magnetocaloric effects of the alloys are general and their curie temperature (TC) can only be adjusted between 296 and 299 K by changing the Sb concentration.
出处
《包头钢铁学院学报》
2003年第2期149-151,共3页
Journal of Baotou University of Iron and Steel Technology
基金
科技部九五攻关项目(99-A30)
