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Aluminum Nano-polycrystalline Substance with Ferromagnetics and Application to High-Frequency Core Inductor

Received: 11 April 2017     Accepted: 22 April 2017     Published: 21 June 2017
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Abstract

It has showed in experiments that aluminum nano-polycrystalline substances are ferromagnetic. A magnetic hysteresis curve measured by SQUID suggested the ferromagnetism. Al bulk is normally thought to be non-magnetic body. Authors also fabricated core inductors using Al nano-polycrystalline substances and measured the inductances of cored inductors with frequency dependence. Al nano-polycrystalline substance was fabricated by sintering Al nanopaste with Al nanoparticles. Al nanoparticles were prepared by using laser ablation in liquid. The structures and components of the sintered Al nano-polycrystalline substances were analyzed by SEM and EDX. It has been shown that inductor using Al nano-polycrystalline substance with low volume resistivity, which is the same order of metal, works at low frequencies below 500 Hz, while inductor using substance with high volume resistivity works at high frequency of 5 MHz. Our analysis of Al nano-polycrystalline substance with high volume resistivity revealed relative permittivity of 7 at frequency of 1 MHz. It has been expected that these inductors to work at frequency of a few GHz because the magnetic resonance frequency of the Al nano-polycrystalline substances were evaluated to be 5.6 GHz and the high volume resistivity results in suppressing the eddy currents.

Published in Journal of Electrical and Electronic Engineering (Volume 5, Issue 3)
DOI 10.11648/j.jeee.20170503.13
Page(s) 98-103
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), 2017. Published by Science Publishing Group

Keywords

Al Nano-polycrystalline, Laser Ablation in Liquids, Core Inductors, High Frequency, Ferro-magnetic, SQUID

References
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[12] K. Saitow and T. Yamamura, “Effective Cooling Generates Efficient Emission: Blue, Green, and Red Light-Emitting Si Nanocrystals”, J. Phys. Chem. C, 2009,113(19), pp.8465-8470.
[13] V. Švrček, T. Sasaki, Y. Shimizu, and N. Koshizaki, “Blue Luminescent Silicon Nanocrystals Prepared by Ns Pulsed Laser Ablation in Water”, Appl. Phys. Lett., 2006, 89, 213113-1-3.
[14] I. Umezu, A. Sugimura, M. Inada, T. Makino, K. Matsumoto, and M. Takata, "Formation of Nanoscale Fine-Structured Silicon by Pulsed Laser Ablation in Hydrogen Background Gas", Phys. Rev. B, 2007, 76, 045328-1-10.
[15] T. Saiki, T. Okada, K. Nakamura, T. Karita, Y. Nishikawa, and Y. Iida, “Air Cells Using Negative Metal Electrodes Fabricated by Sintering Pastes with Base Metal Nanoparticles for Efficient Utilization of Solar Energy”, Int. J. of Energy Science, 2012, 2(6), pp. 228-234.
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  • APA Style

    Mitsuru Inada, Yukio Iida, Taku Saiki, Shinichirou Masuda. (2017). Aluminum Nano-polycrystalline Substance with Ferromagnetics and Application to High-Frequency Core Inductor. Journal of Electrical and Electronic Engineering, 5(3), 98-103. https://doi.org/10.11648/j.jeee.20170503.13

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    ACS Style

    Mitsuru Inada; Yukio Iida; Taku Saiki; Shinichirou Masuda. Aluminum Nano-polycrystalline Substance with Ferromagnetics and Application to High-Frequency Core Inductor. J. Electr. Electron. Eng. 2017, 5(3), 98-103. doi: 10.11648/j.jeee.20170503.13

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    AMA Style

    Mitsuru Inada, Yukio Iida, Taku Saiki, Shinichirou Masuda. Aluminum Nano-polycrystalline Substance with Ferromagnetics and Application to High-Frequency Core Inductor. J Electr Electron Eng. 2017;5(3):98-103. doi: 10.11648/j.jeee.20170503.13

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  • @article{10.11648/j.jeee.20170503.13,
      author = {Mitsuru Inada and Yukio Iida and Taku Saiki and Shinichirou Masuda},
      title = {Aluminum Nano-polycrystalline Substance with Ferromagnetics and Application to High-Frequency Core Inductor},
      journal = {Journal of Electrical and Electronic Engineering},
      volume = {5},
      number = {3},
      pages = {98-103},
      doi = {10.11648/j.jeee.20170503.13},
      url = {https://doi.org/10.11648/j.jeee.20170503.13},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jeee.20170503.13},
      abstract = {It has showed in experiments that aluminum nano-polycrystalline substances are ferromagnetic. A magnetic hysteresis curve measured by SQUID suggested the ferromagnetism. Al bulk is normally thought to be non-magnetic body. Authors also fabricated core inductors using Al nano-polycrystalline substances and measured the inductances of cored inductors with frequency dependence. Al nano-polycrystalline substance was fabricated by sintering Al nanopaste with Al nanoparticles. Al nanoparticles were prepared by using laser ablation in liquid. The structures and components of the sintered Al nano-polycrystalline substances were analyzed by SEM and EDX. It has been shown that inductor using Al nano-polycrystalline substance with low volume resistivity, which is the same order of metal, works at low frequencies below 500 Hz, while inductor using substance with high volume resistivity works at high frequency of 5 MHz. Our analysis of Al nano-polycrystalline substance with high volume resistivity revealed relative permittivity of 7 at frequency of 1 MHz. It has been expected that these inductors to work at frequency of a few GHz because the magnetic resonance frequency of the Al nano-polycrystalline substances were evaluated to be 5.6 GHz and the high volume resistivity results in suppressing the eddy currents.},
     year = {2017}
    }
    

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  • TY  - JOUR
    T1  - Aluminum Nano-polycrystalline Substance with Ferromagnetics and Application to High-Frequency Core Inductor
    AU  - Mitsuru Inada
    AU  - Yukio Iida
    AU  - Taku Saiki
    AU  - Shinichirou Masuda
    Y1  - 2017/06/21
    PY  - 2017
    N1  - https://doi.org/10.11648/j.jeee.20170503.13
    DO  - 10.11648/j.jeee.20170503.13
    T2  - Journal of Electrical and Electronic Engineering
    JF  - Journal of Electrical and Electronic Engineering
    JO  - Journal of Electrical and Electronic Engineering
    SP  - 98
    EP  - 103
    PB  - Science Publishing Group
    SN  - 2329-1605
    UR  - https://doi.org/10.11648/j.jeee.20170503.13
    AB  - It has showed in experiments that aluminum nano-polycrystalline substances are ferromagnetic. A magnetic hysteresis curve measured by SQUID suggested the ferromagnetism. Al bulk is normally thought to be non-magnetic body. Authors also fabricated core inductors using Al nano-polycrystalline substances and measured the inductances of cored inductors with frequency dependence. Al nano-polycrystalline substance was fabricated by sintering Al nanopaste with Al nanoparticles. Al nanoparticles were prepared by using laser ablation in liquid. The structures and components of the sintered Al nano-polycrystalline substances were analyzed by SEM and EDX. It has been shown that inductor using Al nano-polycrystalline substance with low volume resistivity, which is the same order of metal, works at low frequencies below 500 Hz, while inductor using substance with high volume resistivity works at high frequency of 5 MHz. Our analysis of Al nano-polycrystalline substance with high volume resistivity revealed relative permittivity of 7 at frequency of 1 MHz. It has been expected that these inductors to work at frequency of a few GHz because the magnetic resonance frequency of the Al nano-polycrystalline substances were evaluated to be 5.6 GHz and the high volume resistivity results in suppressing the eddy currents.
    VL  - 5
    IS  - 3
    ER  - 

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Author Information
  • Faculty of Engineering Science, Kansai University, Osaka, Japan

  • Faculty of Engineering Science, Kansai University, Osaka, Japan

  • Faculty of Engineering Science, Kansai University, Osaka, Japan

  • Faculty of Engineering Science, Kansai University, Osaka, Japan

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