【摘要】 以硫粉(S)、氧化镉(CdO)和六水氯化铬(CrCl3.6H2O)为原料,用溶剂热法成功地合成了增强铁磁性能铬掺杂CdS纳米棒.X-射线衍射(XRD)测试表明Cr掺杂CdS纳米棒为纤锌矿结构.透射电镜(TEM)表征不同Cr掺杂CdS的形貌为纳米棒,纳米棒长为200～300nm,直径为50～70nm.电子能量散射谱(EDS)表明产物由Cr、Cd、S三种元素组成.振动样品磁强计(VSM)测试表明未掺杂的CdS为弱铁磁性,然而Cr掺杂CdS为强铁磁性,Cr掺杂量在x=0.0000到x=0.072 7范围内,饱和磁化强度随掺杂量的增加而增加,Cd1-xCrxS(x=0.072 7)纳米棒的饱和磁化强度为8.884(10-3 emu/g).更多还原

【Abstract】 Cr-doped CdS nanorods with enhanced room temperature ferromagnetism have been successfully synthesized via solvothermal reaction.X-ray diffraction(XRD) measurements demonstrated that the Cr-doped CdS nanocrystals had a wurtzite structure hexagonal phase.Transmission electron microscopy(TEM) images revealed that the morphologies of CdS doped with different amounts of chromium consisted of nanorods.Cr-doped CdS nanorods produced a regular morphology with diameters of 50~70 nm and lengths of 200~300 nm.This product,composed of Cr,Zn,and S,was observed by an energy dispersive spectrometer(EDS).A vibrating sample magnetometer(VSM) showed that the Cr-doped CdS nanorods exhibited strong ferromagnetism at room temperature,while the pure CdS nanorods exhibited weak ferromagnetism.The saturation magnetization of the Cr-doped CdS nanorods increased with increasing Cr concentration over the range of x=0.000 0 to x= 0.072 7.The saturation magnetization of the Cd1-xCrxS(x= 0.072 7) nanorods was 8.884(10-3 emu/g).更多还原