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
张珠峰 1任银拴2
作者信息
- 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
- 折叠
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.
Abstract
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 Ms 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 Hc 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Key words
Cr/CdS/nanorods/ferromagnetism/solvothermal引用本文复制引用
基金项目
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)
出版年
2024
NETL
NSTL
万方数据