• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/045/0038

    • Keywords

       

      Iron carbide nanoparticles; flow-levitation method; magnetic properties; X-ray photoelectron spectroscopy; transmission electron microscopy; X-ray diffraction.

    • Abstract

       

      In this study, the synthesis of uncontaminated, dispersible, single-crystal, stoichiometric iron carbide (Fe$_3$C) nanoparticulate is pioneered successfully by using the flow-levitation (FL) method. The technique facilitates conditions forclean and direct iron-carbon gas-phase reaction at high temperature, and for the purpose of this work, production regimes and parameters were selected and customized in order to manufacture Fe$_3$C nanoparticles (NPs) of mean size 20 nm for subsequent characterization and evaluation. Characterization is performed using analytical techniques that include transmission electron microscopy (TEM/HRTEM/STEM), electron and X-ray diffraction, X-ray photoelectron spectroscopy, elemental CHNS analysis, specific surface area analysis and vibrating sample magnetometry analysis. The results confirm the uncontaminated and stoichiometric character of the iron carbide NPs and demonstrate their single-crystal nature. The synthesized product exhibits chemical inertness and excellent stability at room temperature over extended periods of time. A detailed analysis of magnetic properties of the nanoparticulate was also performed. The saturation magnetization (Ms) of the product was experimentally determined to be 124 A m$^2$ kg$^{–1}$, which is highly comparable to that of bulk iron carbide. The successful results merit to further investigate the clear advantages of the FL method to manufacture stoichiometric iron carbide nanoparticulate. The technique favours a significant level of parameter controllability during synthesis, which allows repeatability, and effective customization of size and magnetic properties of the resulting nanoproduct.

    • Graphical Abstract

       

    • Author Affiliations

       

      A N ZHIGACH1 I O LEIPUNSKY1 M L KUSKOV1 N G BEREZKINA1 E S AFANASENKOVA1 G W LOPEZ2 E A SKRYLEVA3 V P MENUSHENKOV3 O M ZHIGALINA4 5 D N KHMELENIN4

      1. N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow 119334, Russian Federation
      2. Northeastern University, Boston 02115, USA
      3. National University of Science and Technology MISiS, Moscow 119049, Russian Federation
      4. Shubnikov Institute of Crystallography of Federal Scientific Research Center ‘Crystallography and Photonics’, Russian Academy of Sciences, Moscow 119333, Russian Federation
      5. Bauman Moscow State Technical University, Moscow 105005, Russian Federation
    • Dates

       
  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2023-2024 Indian Academy of Sciences, Bengaluru.