Magnetic and Electrical Behavior of MnTe_(1-x)Sb_x Alloys

查看全文 作　　者：X.He Y.Q.Zhang [1]Z.D.Zhang 机构地区：[1]Shenyang National Laboratory for Materials Science,Institute of Metal Research,and International Center for Materials Physics,Chinese Academy of Sciences,Shenyang 110016,China 出　　处：《Journal of Materials Science & Technology》索引2011年第27卷第1期,共5页 基　　金：supported by the National Basic Research Program of China (No.2010CB934603);the National Natural Science Foundation of China (No.50831006) 摘　　要：The structure,specific heat,magnetic and electrical properties of MnTe1-xSbx(x=0,0.1,0.15,0.2 and 0.25) alloys have been investigated.The MnTe1-xSbx alloys crystallize in a hexagonal NiAs-type structure,and the impurity of MnSb phase appears when x≥0.15.The MnTe0.9Sb0.1 compound exhibits ferrimagnetic behavior with hysteresis loops even at 350 K,showing that the magnetic properties of MnTe compound are very sensitive to little compositional change.The ferromagnetism in the MnTe1-xSbx alloys with higher Sb contents may be attributed to the impurity of MnSb phase.Energy dispersive X-ray spectroscopy analysis on the MnTe0.9Sb0.1 compound indicates that Sb is very difficult to dope into the lattice of MnTe.So the anomaly of resistivity at 300 K of MnTe0.9Sb0.1 and the peak of specific heat around 304 K of all the alloys are thought to be related with the antiferromagnetic interactions of MnTe-based lattice. 关 键 词：合金成份 X射线能谱分析 反铁磁相互作用 磁电 锑化合物 MNSB 铁磁性 能量色散