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

Md. Ziaul Ahsan; Md. Feroz Alam Khan; Md. Aminul Islam

doi:doi:10.11648/j.ijmsa.20180706.11

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

Md. Ziaul Ahsan, Md. Feroz Alam Khan, Md. Aminul Islam

Published in International Journal of Materials Science and Applications (Volume 7, Issue 6)

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), 2024. Published by Science Publishing Group

Keywords

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

References

[1]	A. Saini, P. Kumar, B. Ravelo, S. Lallechere, A. Thakur, P. Thakur. Magneto-dielectric properties of doped ferrite based nanosized ceramics over very high frequency range. Engineering Science and Technology an International Journal, 19(2016) 911-916.
[2]	R. B. Nikodem, New generation solar control coated products. J. Vac. Sci. Technol. A. 10 (1992) 1884–1891.
[3]	J. E. Hilland, F. V. Stuhr, A. Freeman, D. Imel, Y. Shen, R. L. Jordan, et al. Future NASA space borne SAR missions. IEEE Aerosp. Electron Syst. Mag. 13 (1998) 9–16.
[4]	S. E. Lyshevski. Nano-, NanoBio- and NanoBio Medical- Technologies: Enabling sensing, communication and processing paradigms. 12thIEEEConference on Nanotechnology, (2012)1-2.
[5]	K. M. Krishnan. Biomedical nanomagnetics: a spin through possibilities in imaging, diagnostics, and therapy. IEEE Trans. Magn, 46(2010), pp. 2523-2558.
[6]	M. F. L. De Volder, S. H. Tawﬁck, R. H. Baughman, A. J. Hart. Carbon nanotubes: present and future commercial applications. Science 339 (2013) 535–539.
[7]	T. L. Chang, Y. W. Lee. Applications of magnetic nanoparticles in engineering and biomedical science. 7th IEEE Conference on Nanotechnology ( 2007) 656–659.
[8]	S. E. Lyshevski, K. S. Martirosyan. Ferrite nanoparticles for MEMS technology sensors and actuators. 11th IEEE Conference on Nanotechnology (2011) 1252– 1256.
[9]	S. Bhattacharya, S. Maity, S. K. Metya, C. T. Bhunia, Performance enhancement of implantable medical antenna using differential feed technique. Eng. Sci. Technol. Int. J. (2015) doi:10.1016/j.jestch.2015.09.001 In press.
[10]	I. Bibyk, R. Romanofsky, E. Wintucky. RF technologies for advancing space communication infrastructure. IEEE Aero Conference (2006).
[11]	D. A. Grier. The innovation curve [Moore’s law in semiconductor industry]. Computer 39 (2006) 8–10.
[12]	R. R. Schaller. Moore’s law: past, present and future. IEEE Spectrum. 34 (1997) 52–59.
[13]	R. Bala, A. Marwaha. Investigation of graphene based miniaturized tetra hertz antenna for novel substrate materials. Eng. Sci. Technol. Int. J. (2015)doi:10.1016, j.jestch.2015.08.004 In press.
[14]	R. Ahmad, I. Hussain Gul, M. Zarrar, Humaira Anwar. Improved electrical properties of Cd substituted cobalt ferrite nanoparticles for microwave application. Journal of magnetism and magnetic materials, 405(2016)28-35.
[15]	R. C. Hansen, M. Burke. Antennas with magneto-dielectrics. Microw. Opt. Techno. Lett. 26 (2000) 75–78.
[16]	H. Mosallaei, K. Sarabandi. Magneto-dielectrics in electromagnetics: concept and applications. IEEE Trans. Antennas Propag. 52 (2004) 1558–1567.
[17]	K. Min, T. Hong. Miniaturization of antenna using magneto-dielectric materials. IEEE Asia-Paciﬁc Conf. Commun. (2006)1–5.
[18]	P. Mathur, A. Thakur, M. Singh. A study of nanostructured Zn-Mn soft spinel ferrites by citrate precursor method. Phys. Scripta. 77 (2008) 045701
[19]	S. Chaimool, A. Pinsakul, P. Akkarae kthalin, Patch antenna miniaturization using artiﬁcial magneto-dielectric met substrate. International Symposium on Antennas and Propagation (2012)906–909.
[20]	K. Rana, P. Thakur, P. Sharma, M. Tomar, V. Gupta. Improved structural and magnetic properties of cobalt nanoferrites: inﬂuence of sintering temperature. Ceramic Int. 41 (2015) 4492–4497.
[21]	P. Mathur, A. Thakur, M. Singh. Low temperature synthesis of Mn0.4Zn0.6In0.5Fe1.5O4 nanoferrites for high frequency applications. J. Phys. Chem. Solids 69 (2008) 187–192.
[22]	L. B. Kong, M. L. S. Teo, Z. W. Li, G. Q. Lin, Y. B. Gan. Development of magneto-dielectric materials based on Li-ferrite ceramics. J. Alloy. Compd. 459 (2008) 576–582.
[23]	A. Saini, A. Thakur, P. Thakur, Matching permeability and permittivity of Ni0.5Zn0.3Co0.2In0.1Fe1.9O4 ferrite for substrate of large bandwidth miniaturized antenna. J. Mater. Sci. (2015)doi:10.1007/s10854-015-4095-8 In press.
[24]	M. Z. Ahsan, F. A. Khan, M. A. Islam, T. Tabassum, M. K. Alam. Study on AC permeability and permittivity of manganese doped cobalt ferrite nanoparticles. J. Phys. Commun. 2 (2018) 105008:1 – 6.
[25]	M. Z. Ahsan, F. A. Khan. Study of Structural, Electrical and Magnetic Properties of Manganese Doped Cobalt Ferrite Nanoparticles with Non-stoichiometric Composition. Journal of Physical Science and Application (2017) 7(6):30-7.
[26]	M. Z. Ahsan, F. A. Khan. Structural and electrical properties of manganese doped cobalt ferrite nanoparticles. Mater Sci. Nanotechnol. (2018)2(2):1-9.
[27]	S. P. Yadav, S. S. Shinde, A. A. Kadam. Structural, morphological, dielectric and magnetic properties of Mn substituted cobalt ferrite. Journal of Semiconductor, . (2013),” 34:093002.
[28]	N. Ponpandian, P. Balaya, A. Narayanasamy. Electrical conductivity and dielectric behaviour of nanocrystalline NiFe2O4 spinel. Journal of Physics: Condensed Matter (2002) 14: 3221.
[29]	M. Z. Ahsan, F. A. Khan. Study on Effects of Mn Substitution in Cobalt Ferrite. International Conference on Mechanical Engineering and Applied Science (ICMEAS) 2017, Military Institute of Science and Engineering, Dhaka-1216.
[30]	P. Mathur, A. Thakur, M. Singh. Study of low temperature sintered nanocrystalline Mn-Cu-Zn ferrite prepared by co-precipitation method. Mod Phys. Lett. B 21 (2007) 1425–1430.
[31]	S. Bawawaje, M. Hashi, I. Ismail. Effects of Sintering Temperature on the Grain Growth and Complex Permeability of Co0.2Ni0.3Zn0.5Fe2O4 material prepared using mechanically alloyed nanoparticles. Journal of Magnetism and Magnetic Materials 323(2011) 1433-9.
[32]	K. Rana, P. Thakur, P. Sharma, M. Tomar, V. Gupta., Improved structural and magnetic properties of cobalt nanoferrites: inﬂuence of sintering temperature. Ceramic Int. 41 (2015) 4492–4497.
[33]	L. B. Kong, M. L. S. Teo, Z. W. Li, G. Q. Lin, Y. B. Gan. Development of magneto-dielectric materials based on Li-ferrite ceramics. J. Alloy. Compd. 459 (2008) 576–582.
[34]	A. Thakur, P. Thakur, J.-H. Hsu. Enhancement in dielectric and magnetic properties of In3+ substituted Ni-Zn nanoferrites by co-precipitation method. IEEE Trans. Magn. 47 (2011) 4336–4339.
[35]	A. Thakur, P. Mathur, M. Singh. Processing of nanocrystalline spinel ferrite prepared by co-precipitation method. Int. J. Mod. Phys. B 23 (2009) 365–374.
[36]	A. Thakur, A. Chevalier, J.-L. Mattei, P. Queffélec. Suitability of Ni-Zn ferrites ceramics with controlled porosity as granular substrates for mobile handset miniaturized antennas. IEEE Trans. Magn. 47 (2011) 3720–3723.
[37]	A. Pathania, P. Thakur, A. Sharma, J. H. Hsu, A. Thakur. Investigation of iron deﬁcient and manganese doped Ni-Mg nano-ferroxide ceramics. Ceramic Int. 41 (2015) (2015) 10803–10809.
[38]	A. Thakur, P. Mathur, M. Singh. Controlling the properties of Mn-Zn ferrites at high frequency by substituting In3+ and Al3+ ions. Ind. J. Pure Appl. Phys. 46 (2008) 47–53.
[39]	P. Mathur, A. Thakur, M. Singh. Effect of nanoparticles on the magnetic properties of Mn-Zn soft ferrite. J. Magn. Magn. Mater. 320 (2008) 1364–1369.
[40]	P. Mathur, A. Thakur, J. H. Lee, M. Singh. Sustained electromagnetic properties of Ni-Zn-Co nanoferrites for the high frequency applications. Mater. Lett. 64 (2010) 2738–2741.
[41]	R. Nongjai, S. Khan, K. Asokan. Magnetic and electrical properties of In doped cobalt ferrite nanoparticles. J Appl Phys. 2012; 112:084321.
[42]	S. E. Shirsath, B. G. Toksha, K. M. Jadhav. Structural and magnetic properties of In3+ substituted NiFe2O4. Mater Chem Phys. 2009; 117:163.
[43]	R. C. Kambale, P. A. Shaikh, C. H. Bhosale. The effect of Mn substitution on the magnetic and dielectric properties of cobalt ferrite synthesized by an auto combustion route. Smart Mater Struct. 2009; 18:115028.
[44]	N. Rezlescu, E. Rezlescu. Dielectric properties of copper containing ferrites. Phys Status Solidi A. 1974;23(2):575.
[45]	C. G. Koop’s. On the dispersion of resistivity and dielectric constant of some semiconductors at audio frequencies. Phys Rev. 1951; 83(1):121–4.
[46]	A. Thakur, P. Thakur, J. H. Hsu, “Magnetic behaviourofNi0.4Zn0.6Co0.1Fe1.9O4 spinel nanoferrite. J. Appl. Phys. 111 (2012) 078305.
[47]	S. S. Thakur, A. Pathania, P. Thakur, A. Thakur, J. H. Hsu, Improved structural, electrical and magnetic properties of Mn–Zn–Cd nanoferrites. Ceramic. Int. 41 (2015) 5072–5078.

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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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ACS 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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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

Md. Ziaul Ahsan

Department of Physics, Military Institute of Science and Technology (MIST), Dhaka, Bangladesh; Department of Physics, Bangladesh University of Engineering and Technology (BUET), Dhaka, Bangladesh
Md. Feroz Alam Khan

Department of Physics, Bangladesh University of Engineering and Technology (BUET), Dhaka, Bangladesh
Md. Aminul Islam

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

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APA Style

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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ACS 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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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

Copy | Download

@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}
}

Copy | Download

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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