Gadolinium silicide (Gd5Si4) nanoparticles for tuneable broad band microwave absorption
Date
2019-01-10
Authors
Bora, Pritom
Harstad, S. M.
Gupta, Shalabh
Pecharsky, Vitalij
Vinoy, K. J.
Ramamurthy, Praveen
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Abstract
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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IS-J 9907
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article