Publication Date
4-13-2019
Department
Ames Laboratory; Electrical and Computer Engineering; Materials Science and Engineering
Campus Units
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
Volume Number
252
First Page
178
Last Page
181
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)
Included in
Electrical and Computer Engineering Commons, Materials Science and Engineering Commons, Nanoscience and Nanotechnology Commons
