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Selected Works of Ravi L. Hadimani
Article
Enhancement of microwave absorption bandwidth of polymer blend using ferromagnetic gadolinium silicide nanoparticles
Ames Laboratory Accepted Manuscripts
  • Pritom J. Bora, Indian Institute of Science
  • Shalabh Gupta, Ames Laboratory
  • Vitalij K. Pecharsky, Iowa State University and Ames Laboratory
  • K. J. Vinoy, Indian Institute of Science
  • Praveen C. Ramamurthy, Indian Institute of Science
  • Ravi L. Hadimani, Iowa State University and Virginia Commonwealth University
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Publication Date
4-13-2019
Department
Ames Laboratory; Electrical and Computer Engineering; Materials Science and Engineering
OSTI ID+
1529366
Report Number
IS-J 9960
DOI
10.1016/j.matlet.2019.04.013
Journal Title
Materials Letters
Abstract

Ferromagnetic gadolinium silicide (Gd5Si4) nanoparticles significantly enhance the microwave absorption bandwidth of a polymer blend (PVB-PEDOT:PSS). These materials are critically 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 shows the most promising bandwidth (8.2–18 GHz) with a minimum reflection loss of -14 dB. Mechanistically, dielectric loss (tan δe ≈2.4) and magnetic loss (tan δm ≈1.1) contributes more efficiently, and standard microwave simulation confirms the stored energy is predominant in PPGS nanocomposite which enhances the bandwidth.

DOE Contract Number(s)
AC02-07CH11358
Language
en
Publisher
Iowa State University Digital Repository, Ames IA (United States)
Disciplines
Citation Information
Pritom J. Bora, Shalabh Gupta, Vitalij K. Pecharsky, K. J. Vinoy, et al.. "Enhancement of microwave absorption bandwidth of polymer blend using ferromagnetic gadolinium silicide nanoparticles" Vol. 252 (2019) p. 178 - 181
Available at: http://works.bepress.com/rlhadimani/39/