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Influence of Milling Time on Structural and Electromagnetic Properties of Manganese Doped Cobalt Ferrite Nanoparticles

Received: 8 December 2018     Accepted: 5 January 2019     Published: 23 January 2019
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Abstract

This paper reports on the electromagnetic properties of manganese doped cobalt ferrite nanoparticles, synthesized via solid state reaction route using the planetary ball milling technique at different milling time (8h and 12h)in order to tune the material for applications in high frequency as well as microwave devices. The XRD patterns show the cubic spinel structure of the material. The lattice constant along with other associated structural parameters are found to increase but the particle size to decrease with the milling time. The positive value of real part of permeability is found to increase with the increase of frequency for the sample of milling time 8h. But for the sample of milling time 12h, its negative value is observed below 2 kHz and after onwards it becomes positive. This negative value of real part is the signature of diamagnetic behavior at the low frequency regime, which is assumed to originate due to the dominance of antiferromagnetic effect of Mn2+ ions on the B site. The diamagnetic behavior may make this material suitable to be used in electromagnetic suppression or shielding devices. The real part ε' of permittivity demonstrates the normal behavior for both the sample of milling time 8h and 12h below 2 kHz and 0.1 MHz respectively. The peaks at 8MHz for the sample of milling time 8h and at 1MHz for the sample of milling time 12h in the dispersion of its imaginary part ε'' indicate the resonance condition for the respective sample at the higher frequency regime, which is assumed to be originated from the faster hoping of electrons between Fe2+ and Fe3+ in the B site. At the low frequency regime, the a.c resistivity decreases almost exponentially with the increase of frequency to a certain minimum value at 10 kHz and 1 kHz for the samples of milling time 8h and 12h respectively and after onwards it becomes almost independent of frequency. The structural correlation is analyzed with the Col-Cole plot where the single incomplete semicircle corresponds to the grain boundary resistance for 12h milled sample and double incomplete semicircles to both the grain boundary and grain resistances for 8h milled sample. Almost constant characteristic impedance implies that both the permeability and permittivity are of equal value for the sample of milling time 12h and its nearer-to-zero value of eddy current loss may make this material suitable to be used in the design of microstrip/patch antenna. However the linear variation of characteristic impedance with the frequency for the sample of milling time 8h implies the tuning effect of multilayer capacitance, which may make this sample to be integrated as tuner with the microstrip/patch antenna.

Published in International Journal of Materials Science and Applications (Volume 7, Issue 6)
DOI 10.11648/j.ijmsa.20180706.11
Page(s) 199-208
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Permittivity, Permeability, Resistivity, Characteristic Impedance, Microstrip/Patch Antenna

References
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    Md. Ziaul Ahsan, Md. Feroz Alam Khan, Md. Aminul Islam. (2019). Influence of Milling Time on Structural and Electromagnetic Properties of Manganese Doped Cobalt Ferrite Nanoparticles. International Journal of Materials Science and Applications, 7(6), 199-208. https://doi.org/10.11648/j.ijmsa.20180706.11

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    Md. Ziaul Ahsan; Md. Feroz Alam Khan; Md. Aminul Islam. Influence of Milling Time on Structural and Electromagnetic Properties of Manganese Doped Cobalt Ferrite Nanoparticles. Int. J. Mater. Sci. Appl. 2019, 7(6), 199-208. doi: 10.11648/j.ijmsa.20180706.11

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    AMA Style

    Md. Ziaul Ahsan, Md. Feroz Alam Khan, Md. Aminul Islam. Influence of Milling Time on Structural and Electromagnetic Properties of Manganese Doped Cobalt Ferrite Nanoparticles. Int J Mater Sci Appl. 2019;7(6):199-208. doi: 10.11648/j.ijmsa.20180706.11

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  • @article{10.11648/j.ijmsa.20180706.11,
      author = {Md. Ziaul Ahsan and Md. Feroz Alam Khan and Md. Aminul Islam},
      title = {Influence of Milling Time on Structural and Electromagnetic Properties of Manganese Doped Cobalt Ferrite Nanoparticles},
      journal = {International Journal of Materials Science and Applications},
      volume = {7},
      number = {6},
      pages = {199-208},
      doi = {10.11648/j.ijmsa.20180706.11},
      url = {https://doi.org/10.11648/j.ijmsa.20180706.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20180706.11},
      abstract = {This paper reports on the electromagnetic properties of manganese doped cobalt ferrite nanoparticles, synthesized via solid state reaction route using the planetary ball milling technique at different milling time (8h and 12h)in order to tune the material for applications in high frequency as well as microwave devices. The XRD patterns show the cubic spinel structure of the material. The lattice constant along with other associated structural parameters are found to increase but the particle size to decrease with the milling time. The positive value of real part of permeability is found to increase with the increase of frequency for the sample of milling time 8h. But for the sample of milling time 12h, its negative value is observed below 2 kHz and after onwards it becomes positive. This negative value of real part is the signature of diamagnetic behavior at the low frequency regime, which is assumed to originate due to the dominance of antiferromagnetic effect of Mn2+ ions on the B site. The diamagnetic behavior may make this material suitable to be used in electromagnetic suppression or shielding devices. The real part ε' of permittivity demonstrates the normal behavior for both the sample of milling time 8h and 12h below 2 kHz and 0.1 MHz respectively. The peaks at 8MHz for the sample of milling time 8h and at 1MHz for the sample of milling time 12h in the dispersion of its imaginary part ε'' indicate the resonance condition for the respective sample at the higher frequency regime, which is assumed to be originated from the faster hoping of electrons between Fe2+ and Fe3+ in the B site. At the low frequency regime, the a.c resistivity decreases almost exponentially with the increase of frequency to a certain minimum value at 10 kHz and 1 kHz for the samples of milling time 8h and 12h respectively and after onwards it becomes almost independent of frequency. The structural correlation is analyzed with the Col-Cole plot where the single incomplete semicircle corresponds to the grain boundary resistance for 12h milled sample and double incomplete semicircles to both the grain boundary and grain resistances for 8h milled sample. Almost constant characteristic impedance implies that both the permeability and permittivity are of equal value for the sample of milling time 12h and its nearer-to-zero value of eddy current loss may make this material suitable to be used in the design of microstrip/patch antenna. However the linear variation of characteristic impedance with the frequency for the sample of milling time 8h implies the tuning effect of multilayer capacitance, which may make this sample to be integrated as tuner with the microstrip/patch antenna.},
     year = {2019}
    }
    

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  • TY  - JOUR
    T1  - Influence of Milling Time on Structural and Electromagnetic Properties of Manganese Doped Cobalt Ferrite Nanoparticles
    AU  - Md. Ziaul Ahsan
    AU  - Md. Feroz Alam Khan
    AU  - Md. Aminul Islam
    Y1  - 2019/01/23
    PY  - 2019
    N1  - https://doi.org/10.11648/j.ijmsa.20180706.11
    DO  - 10.11648/j.ijmsa.20180706.11
    T2  - International Journal of Materials Science and Applications
    JF  - International Journal of Materials Science and Applications
    JO  - International Journal of Materials Science and Applications
    SP  - 199
    EP  - 208
    PB  - Science Publishing Group
    SN  - 2327-2643
    UR  - https://doi.org/10.11648/j.ijmsa.20180706.11
    AB  - This paper reports on the electromagnetic properties of manganese doped cobalt ferrite nanoparticles, synthesized via solid state reaction route using the planetary ball milling technique at different milling time (8h and 12h)in order to tune the material for applications in high frequency as well as microwave devices. The XRD patterns show the cubic spinel structure of the material. The lattice constant along with other associated structural parameters are found to increase but the particle size to decrease with the milling time. The positive value of real part of permeability is found to increase with the increase of frequency for the sample of milling time 8h. But for the sample of milling time 12h, its negative value is observed below 2 kHz and after onwards it becomes positive. This negative value of real part is the signature of diamagnetic behavior at the low frequency regime, which is assumed to originate due to the dominance of antiferromagnetic effect of Mn2+ ions on the B site. The diamagnetic behavior may make this material suitable to be used in electromagnetic suppression or shielding devices. The real part ε' of permittivity demonstrates the normal behavior for both the sample of milling time 8h and 12h below 2 kHz and 0.1 MHz respectively. The peaks at 8MHz for the sample of milling time 8h and at 1MHz for the sample of milling time 12h in the dispersion of its imaginary part ε'' indicate the resonance condition for the respective sample at the higher frequency regime, which is assumed to be originated from the faster hoping of electrons between Fe2+ and Fe3+ in the B site. At the low frequency regime, the a.c resistivity decreases almost exponentially with the increase of frequency to a certain minimum value at 10 kHz and 1 kHz for the samples of milling time 8h and 12h respectively and after onwards it becomes almost independent of frequency. The structural correlation is analyzed with the Col-Cole plot where the single incomplete semicircle corresponds to the grain boundary resistance for 12h milled sample and double incomplete semicircles to both the grain boundary and grain resistances for 8h milled sample. Almost constant characteristic impedance implies that both the permeability and permittivity are of equal value for the sample of milling time 12h and its nearer-to-zero value of eddy current loss may make this material suitable to be used in the design of microstrip/patch antenna. However the linear variation of characteristic impedance with the frequency for the sample of milling time 8h implies the tuning effect of multilayer capacitance, which may make this sample to be integrated as tuner with the microstrip/patch antenna.
    VL  - 7
    IS  - 6
    ER  - 

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Author Information
  • Department of Physics, Military Institute of Science and Technology (MIST), Dhaka, Bangladesh

  • Department of Physics, Bangladesh University of Engineering and Technology (BUET), Dhaka, Bangladesh

  • Department of Physics, Bangladesh University of Engineering and Technology (BUET), Dhaka, Bangladesh

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