Mn_5Ge_(3-x)Sb_x系列合金在低磁场下的磁热效应  

Magnetocaloric effect of Mn_5Ge_(3-x)Sb_x alloys at low field

作　　者：陈明[1] 王正德[2] 李保卫 

机构地区：[1]包头钢铁学院材料工程学院,内蒙古包头014010 [2]包头钢铁学院生物与化学工程系,内蒙古包头014010 [3]包头钢铁学院冶金工程研究所,内蒙古包头014010

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)

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ＴＣThe Mn5Ge3-xSbx alloys were prepared in a highfrequency 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 selfmade ΔTadT 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 (TC) can only be adjusted between 296 and 299 K by changing the Sb concentration.

关 键 词：磁热效应 Mn5Ce3-xSbx合金 居里温度 

分 类 号：TG146.45[一般工业技术—材料科学与工程] O482.6[金属学及工艺—金属材料]