摘要
采用水热法制备出垂直于ITO基底生长的高密度的Mn掺杂ZnO纳米棒阵列。测试阵列的微观结构和磁性。XPS证实Mn已经成功的掺入到纳米棒中。同时,所有的Mn掺杂的ZnO纳米棒在室温都有铁磁性。而且饱和磁化强度随掺杂浓度的增加先增大后减小。5%Mn掺杂的ZnO纳米棒阵列的饱和磁化强度最大。铁磁性可能来源于Mn离子部分取代Zn离子,Mn离子之间的铁磁相互作用。
High density Mn-doped ZnO nanorod arrays were vertically grown on ITO sub- strate via hydrothennal reaction. The microstructure and magnetism of the arrays have been examined. X-ray photoemission spectroscopy demonstrates that Mn is successfully doped into the nanorods. Meanwhile, all the Mn-doped ZnO nanorod arrays are ferromagnetic at roora temperature. It is also found that the value of the saturauoa magnetization （Ms） of the ZnO nanorod arrays firstly increases with increasing the Mn concentration and then decreases. The higher Ms value is obtained in the 5 at.% Mn-doped ZnO nanorod arrays. The ferromagnetism comes from the ferromagnetic interaction between the Mn ions. which partly replace Zn ions.
出处
《现代仪器》
2011年第5期52-54,共3页
Modern Instruments
