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Mn₅Ge_3-xSb_x系列合金在低磁场下的磁热效应

Magnetocaloric effect of Mn₅Ge_3-xSb_x alloys at low field

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【Author】 CHEN Ming1, WANG Zhengde2, LI Baowei3(1.Material Engineering School,UIST Baotou,Baotou 014010,China;2. Department of Biological and Chemical Engineering, UIST Baotou, Baotou 014010,China;3. Institute of metallurgical Engineering, UIST Baotou, Baotou 014010, China)

【机构】包头钢铁学院材料工程学院；包头钢铁学院生物与化学工程系；包头钢铁学院冶金工程研究所内蒙古包头　014010；内蒙古包头　014010；内蒙古包头　014010；

【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的影响不大更多还原

【Abstract】 The 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.更多还原