IDEAS home Printed from https://ideas.repec.org/a/wsi/srlxxx/v28y2021i06ns0218625x21500529.html
   My bibliography  Save this article

TUNING OF CRYSTALLITE SIZE, ENERGY GAP, AND MAGNETIC PROPERTY OF Mn-DOPED CoFe2O4 NANOPARTICLES

Author

Listed:
  • P. PRIYADHARSHINI

    (Department of Physics, Government Arts College, Karur-639 005, India)

  • K. PUSHPANATHAN

    (Department of Physics, Government Arts College, Karur-639 005, India)

Abstract

This paper focuses on the synthesis and structural, optical, and magnetic characterization of Mn-doped CoFe2O4 nanoparticles synthesized by a simple chemical co-precipitation method. Synthesized magnetic nanoparticles were characterized by XRD, FTIR, UV-Vis, PL, TEM, VSM, and EPR spectroscopy. XRD analysis confirmed the significant reduction in the crystallite size from ∼17nm to 10nm as the Mn content is increased from 0 to 1. UV-Vis spectra confirmed that the Co–Mn ferrite is a direct bandgap magnetic material that possesses an energy gap from 3.92eV to 4.33eV. FTIR vibrational frequency observed between 468 and 548 cm−1confirmed the existence of metal–oxygen bond at tetrahedral and octahedral sites. Photoluminescence spectra confirmed the red emission of the samples from the peak at 680nm. TEM analysis suggests that the single domain of CoFe2O4 nanoparticles may vary between 38 and 72nm. Composition analysis confirmed the homogeneous mixing of Co, Mn Fe, and O atoms in the synthesized samples. The VSM study confirmed that Mn substitution favors transition from ferromagnetic to superparamagnetic. VSM analysis also confirmed the lessening in saturation magnetization and coercivity on Mn doping. The X-band electron paramagnetic resonance spectrum recorded at room temperature conveys that the superexchange interaction is increased with the increase in Mn concentration.

Suggested Citation

  • P. Priyadharshini & K. Pushpanathan, 2021. "TUNING OF CRYSTALLITE SIZE, ENERGY GAP, AND MAGNETIC PROPERTY OF Mn-DOPED CoFe2O4 NANOPARTICLES," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 28(06), pages 1-21, June.
    • Handle: RePEc:wsi:srlxxx:v:28:y:2021:i:06:n:s0218625x21500529
    DOI: 10.1142/S0218625X21500529
    as

    Download full text from publisher

    File URL: http://www.worldscientific.com/doi/abs/10.1142/S0218625X21500529
    Download Restriction: Access to full text is restricted to subscribers
    File URL: https://libkey.io/10.1142/S0218625X21500529?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to

    for a different version of it.

    More about this item

    Keywords

    ;
    ;
    ;
    ;
    ;

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:wsi:srlxxx:v:28:y:2021:i:06:n:s0218625x21500529. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Tai Tone Lim (email available below). General contact details of provider: http://www.worldscinet.com/srl/srl.shtml .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.