铬掺杂CdS纳米棒室温铁磁性及光学性质  

Room Temperature Ferromagnetic and Optical Properties of Chromium Doped CdS Nanorods

作　　者：张珠峰 任银拴[2] ZHANG Zhufeng;REN Yinshuan(Chongqing College of Mobile Communication,Chongqing 401520,China;School of Physics and Electronics,Qian Nan Normal College for Nationalities,Duyun 558000,China)

机构地区：[1]重庆移通学院,重庆401520 [2]黔南民族师范学院物理与电子学院,贵州都匀558000

出　　处：《有色金属工程》2024年第3期34-42,97,共10页Nonferrous Metals Engineering

基　　金：国家自然科学基金资助项目(11864032);贵州省基础研究计划项目([2020]1Y208);重庆移通学院高等教育教学改革研究项目(22JG322)。

摘　　要：用溶剂热法合成了具有室温铁磁性能Cr掺杂的CdS纳米棒。XRD分析表明产物为六方相CdS。TEM表明不同Cr含量的CdS均为纳米棒,CdS纳米棒长为100~350 nm,平均直径为20~30 nm, CdS纳米棒的形貌与Cr掺杂量的多少无关。EDS测试表明,合成产物由S、Cd和Cr三种元素组成。振动样品磁强计(VSM)表明,Cr掺杂CdS纳米棒在室温下有铁磁性,而未掺杂CdS纳米棒有弱铁磁性。Cr掺杂CdS纳米棒(Cr=4.17%,7.31%,均为原子分数)的饱和磁化强度Ms分别为3.907和8.798(×10^(-3)emu/g),矫顽力Hc分别为96.21和137.15 Oe(1 Oe=79.58 A/m)。CdS纳米棒室温铁磁性能的产生与CdS晶格中Cd原子被Cr的取代有着密切关系。Cr-doped CdS nanorods with room temperature ferromagnetism were successfully synthesized by simple solvothermal method.X-Ray Diffraction(XRD)analysis showed that the product was hexagonal CdS.Transmission Electron Microscopy(TEM)analysis showed that CdS with different chromium contents were nanorods,the length of CdS nanorods was 100—350 nm,and the average diameter was 20—30 nm,which was almost independent of the quantity of chromium doped.Energy Dispersive Spectroscopy(EDS)measurements demonstrated that the synthesized product was composed of S,Cd and Cr.The Vibrating Sample Magnetometer(VSM)demonstrated that Cr-doped CdS nanorods exhibited ferromagnetism at room temperature,while non Cr-doped CdS nanorods exhibited weak ferromagnetism.The saturation magnetization M s of Cr-doped CdS nanorods(Cr=4.17 at.%,7.31 at.%)was about 3.907 and 8.798(×10^(-3) emu/g)respectively,and the coercivity of H c was about 96.21 and 137.15 Oe(1 Oe=79.58 A/m).The room temperature ferromagnetic properties of CdS nanorods were closely related to the substitution of Cd atoms by Cr in the CdS lattice.

关 键 词：铬 CDS 纳米棒 铁磁性 溶剂热 

分 类 号：TQ134.32[化学工程—无机化工]