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Title: Enhancement of microwave absorption bandwidth of polymer blend using ferromagnetic gadolinium silicide nanoparticles

Abstract

Ferromagnetic gadolinium silicide (Gd 5Si 4) nanoparticles significantly enhance the microwave absorption bandwidth of a polymer blend (PVB-PEDOT:PSS). These materials are essentially needed for various military and civilian applications such as X-band (8.2–12.4 GHz) and Ku-band (12.4–18 GHz) absorption. A single 1.2 mm thick layer of PVB-PEDOT:PSS-Gd 5Si 4 (PPGS) nanocomposite film demonstrates the most promising bandwidth (8.2–18 GHz) with a minimum reflection loss of -14 dB. Mechanistically, dielectric loss ($$\mathcal {tan}$$δ e ≈2.4) and magnetic loss ($$\mathcal {tan}$$δ m ≈1.1) contributes more efficiently, and standard microwave simulation confirms the stored energy is predominant in PPGS nanocomposite which enhances the bandwidth.

Authors:
 [1];  [2];  [3];  [4];  [5];  [6]
  1. Indian Inst. of Technology (IIT), Madras (India). Interdisciplinary Centre for Energy Research (ICER)
  2. Ames Laboratory (AMES), Ames, IA (United States)
  3. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  4. Indian Inst. of Technology (IIT), Madras (India). Dept. of Electrical and Communication Engineering
  5. Indian Inst. of Technology (IIT), Madras (India). Interdisciplinary Centre for Energy Research (ICER); Indian Inst. of Technology (IIT), Madras (India). Dept. of Materials Engineering
  6. Virginia Commonwealth Univ., Richmond, VA (United States); Iowa State Univ., Ames, IA (United States)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
OSTI Identifier:
1529366
Report Number(s):
IS-J-9660
Journal ID: ISSN 0167-577X
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Materials Letters
Additional Journal Information:
Journal Volume: 252; Journal Issue: C; Journal ID: ISSN 0167-577X
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
Polymer nanocomposites; Dielectrics; Reflection loss (RL); RL bandwidth

Citation Formats

Bora, Pritom J., Gupta, Shalabh, Pecharsky, Vitalij K., Vinoy, K. J., Ramamurthy, Praveen C., and Hadimani, Ravi L. Enhancement of microwave absorption bandwidth of polymer blend using ferromagnetic gadolinium silicide nanoparticles. United States: N. p., 2019. Web. doi:10.1016/j.matlet.2019.04.013.
Bora, Pritom J., Gupta, Shalabh, Pecharsky, Vitalij K., Vinoy, K. J., Ramamurthy, Praveen C., & Hadimani, Ravi L. Enhancement of microwave absorption bandwidth of polymer blend using ferromagnetic gadolinium silicide nanoparticles. United States. doi:10.1016/j.matlet.2019.04.013.
Bora, Pritom J., Gupta, Shalabh, Pecharsky, Vitalij K., Vinoy, K. J., Ramamurthy, Praveen C., and Hadimani, Ravi L. Sat . "Enhancement of microwave absorption bandwidth of polymer blend using ferromagnetic gadolinium silicide nanoparticles". United States. doi:10.1016/j.matlet.2019.04.013.
@article{osti_1529366,
title = {Enhancement of microwave absorption bandwidth of polymer blend using ferromagnetic gadolinium silicide nanoparticles},
author = {Bora, Pritom J. and Gupta, Shalabh and Pecharsky, Vitalij K. and Vinoy, K. J. and Ramamurthy, Praveen C. and Hadimani, Ravi L.},
abstractNote = {Ferromagnetic gadolinium silicide (Gd5Si4) nanoparticles significantly enhance the microwave absorption bandwidth of a polymer blend (PVB-PEDOT:PSS). These materials are essentially needed for various military and civilian applications such as X-band (8.2–12.4 GHz) and Ku-band (12.4–18 GHz) absorption. A single 1.2 mm thick layer of PVB-PEDOT:PSS-Gd5Si4 (PPGS) nanocomposite film demonstrates the most promising bandwidth (8.2–18 GHz) with a minimum reflection loss of -14 dB. Mechanistically, dielectric loss ($\mathcal {tan}$δe ≈2.4) and magnetic loss ($\mathcal {tan}$δm ≈1.1) contributes more efficiently, and standard microwave simulation confirms the stored energy is predominant in PPGS nanocomposite which enhances the bandwidth.},
doi = {10.1016/j.matlet.2019.04.013},
journal = {Materials Letters},
number = C,
volume = 252,
place = {United States},
year = {2019},
month = {4}
}

Journal Article:
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This content will become publicly available on April 13, 2020
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