Journal
MATERIALS RESEARCH EXPRESS
Volume 6, Issue 5, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/aafd55
Keywords
nanoparticles; gadolinium silicide; reflection loss; dielectrics
Categories
Funding
- Division of Materials Science and Engineering of the Office of Basic Energy Sciences of the U.S. Department of Energy
- U.S. Department of Energy [DE-AC02-07CH11358]
- National Science Foundation [1610967, 1726617]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1726617] Funding Source: National Science Foundation
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1610967] Funding Source: National Science Foundation
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Soft magnetic Gd5Si4 nanoparticles exhibit excellent microwave absorption in the Ku-band (12.4-18 GHz) when dispersed in poly (dimethyl siloxane), PDMS. The minimum experimentally recorded reflection loss (RL) of Gd5Si4-PDMS nanocomposite is -69 dB, with a large bandwidth for a single 6 mm-thick layer. The bandwidth can be further extended by using a novel design where 1 mm-thick layers of the nanocomposite are arranged into a modified pyramid-shaped absorber. Standard electromagnetic (EM) simulations confirm experimental results.
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