Fe3C/Fe nanoparticles with urea: Synthesis, structure and magnetic properties

Fe3C/Fe nanocomposites were synthesized by a sol–gel method. Using urea as carbon source and reduce agent in the reaction process. The CTAB works as the surfactant and the bromine contained in CTAB plays a catalytic role. Appropriate choices of the amount of urea and CTAB, reaction temperature and t...

Full description

Saved in:
Bibliographic Details
Published inJournal of magnetism and magnetic materials Vol. 420; pp. 241 - 244
Main Authors Wang, Xiaobai, Zhang, Daguang, Ren, Xiaozhen, Gao, Jiajia, Han, Yu, Chen, Xiaodong, Shi, Zhan, Yang, Hua
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.12.2016
Subjects
Fe3C/Fe
Magnetic properties
Nanocomposites
Sol–gel method
Urea
Urea
Fe3C/Fe
Nanocomposites
Sol–gel method
Magnetic properties
Online AccessGet full text

Cover

More Information
Summary:Fe3C/Fe nanocomposites were synthesized by a sol–gel method. Using urea as carbon source and reduce agent in the reaction process. The CTAB works as the surfactant and the bromine contained in CTAB plays a catalytic role. Appropriate choices of the amount of urea and CTAB, reaction temperature and time are very important to obtain high-quality of products. Above 650°C, the precursor gel turned into the nanocomposites composed of iron carbide and iron. Their structures and magnetic properties are characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and vibrating sample magnetometry (VSM). The possible formation mechanism of as-prepared nanostructures is discussed. [Display omitted] •The Fe3C/Fe composites were synthetized by sol–gel method.•Their structure, magnetic properties are researched by XRD, VSM and TEM.•The possible formation mechanisms of the composites is discussed.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2016.07.036