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Effects of the morphology of CIPs on microwave absorption behaviors

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Abstract

Electromagnetic (EM) wave absorption properties are affected by the thickness and surface area of absorbing materials. In this study, a facile ball-milling process was introduced to effectively reduce the diameter and increase the aspect ratio of carbonyl iron powder (CIP), which is one of the most commercially available EM-absorbing materials. The size, aspect ratio, and consequent surface area of CIP were manipulated by controlling the milling parameters to investigate their effects on EM absorption properties. The results indicated that ball-milled CIPs exhibited better EM wave absorption ability when compared with that of pristine CIPs. However, significant differences in minimum reflection loss values were not observed between CIPs with different morphologies and similar specific surface areas. Hence, both fine and flaky CIPs were considered as beneficial for EM wave absorption.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Kookmin University, Seoul, 02707, Korea

    Soobin Woo, Mijung Lee & Hyunjoo Choi

  2. Korea Electronics Technology Institute, Seongnam, 13509, Korea

    Chan-Sei Yoo

  3. Liquid processing & Casting Technology R&D Group, Korea Institute of Industrial Technology, Incheon, 21999, Korea

    Hwijun Kim

  4. Department of Materials Science and Engineering, University of Texas at Dallas, Texas, 75080, USA

    Manuel Quevedo-Lopez

Authors
  1. Soobin Woo
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  2. Chan-Sei Yoo
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  3. Hwijun Kim
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  4. Mijung Lee
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  5. Manuel Quevedo-Lopez
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  6. Hyunjoo Choi
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Correspondence to Hyunjoo Choi.

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Woo, S., Yoo, CS., Kim, H. et al. Effects of the morphology of CIPs on microwave absorption behaviors. Electron. Mater. Lett. 13, 471–477 (2017). https://doi.org/10.1007/s13391-017-7002-z

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  • DOI: https://doi.org/10.1007/s13391-017-7002-z

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